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RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - RRB NTPC/ASM/CA/TA MCQ


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30 Questions MCQ Test RRB NTPC - Previous Year Papers - RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1)

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) for RRB NTPC/ASM/CA/TA 2025 is part of RRB NTPC - Previous Year Papers preparation. The RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) questions and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus.The RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) MCQs are made for RRB NTPC/ASM/CA/TA 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) below.
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RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 1

One of the most important teachers of Chishti Silsila, Shaikh Moinuddin Chishti dargah is located at _______.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 1

The correct answer is Ajmer.

Key Points

  • One of the most important teachers of Chishti Silsila, Shaikh Moinuddin Chishti dargah is located at Ajmer.
  • Moinuddin Hasan Chishti was born in Sijistan in Iran in 1141-42 CE.
  • After Muizuddin Muhammad bin Sam of Ghor had already defeated Prithviraj Chauhan in the Second Battle of Tarain (1192) and established his rule in Delhi, Khwaja Moinuddin Chishti started living and preaching in Ajmer.

Image:

Additional Information

  • The First Battle of Tarain was fought in 1191.
  • The third Battle of Tarain was fought in 1216 between Iltutmish and Tajuddin.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 2

The exile of the ruler of which kingdom was termed as "The life has gone out of the body"?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 2

The correct answer is Awadh.

Key Points

  • The exile of the ruler of Awadh kingdom was termed as "The life has gone out of the body".
  • Awadh, known in British historical texts as Avadh or Oudh.
  • Awadh is a region of Uttar Pradesh
  • The traditional capital of Awadh was Lucknow, also the station of the British Resident, which now is the capital of Uttar Pradesh.

Important Points Why it was termed as "The life has gone out of the body"?

  • Awadh was annexed by the British on the plea that the region was being misgoverned
  • The British thought that the Nawab was not popular but on the contrary, he was very popular.
  • People considered it as “the life has gone out of the body”.
  • The removal led to an emotional upheaval among the people of Awadh.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 3

The following pie-chart shows the percentage of students of a metro city enrolled in various hobby classes during summer vacation in 2018. If the total number of students is 3500, find the total number of students enrolled in karate, cooking and creative writing.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 3

Given:

Percentage number of students enrolled in Karate = 25%

Percentage number of students enrolled in Cooking = 8%

Percentage number of students enrolled in creative writing = 14%

Total percentage number of students enrolled in Karate, Cooking and creative writing = 25 + 8 + 14 = 47%

∴ Total number of students enrolled in Karate, Cooking, and Creative writing = 47/100 × 3500 = 1645

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 4

Who painted "In Memorium", a painting dedicated to the British ladies in India during the mutiny of 1857?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 4

The correct answer is Joseph Noel Paton.

Key Points

  • Joseph Noel Paton painted ''In Memorium'', a painting dedicated to the British ladies in India during the mutiny of 1857.
  • Sir Joseph Noel Paton FRSA was a Scottish artist, illustrator, and sculptor.
  • He was also a poet and had an interest in, and knowledge of, Scottish folklore and Celtic legends.

Additional Information

  • Some other important works of Joseph Noel Paton:
    • Hesperus (1857)
    • Home (1855–56)
    • How an Angel Rowed Sir Galahad Across the Dern Mere (1888)
    • Oberon and the Mermaid (1888)
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 5
What is the name of the book written by Ernest Mackay about archaeological excavations?
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 5

The correct answer is Further Excavations at Mohenjo-Daro.

Key Points

  • 'Further Excavations at Mohenjo-Daro's is the name of the book written by Ernest Mackay about archaeological excavations.
  • This book was originally published in 1934.
  • Other books are written by Ernest Mackay:
    • Chanhu-Daro excavation.
    • Indus Civilisation.
    • The city of Shepherd Kings and Ancient Gaza V.
    • Further Excavations At Mohenjo-Daro.

Additional Information

  • Some features of Mohenjo-Daro:
    • Mohenjo-Daro was the largest site of the Indus Valley Civilization.
    • Mohenjo-Daro was the world's earliest major urban settlement.
    • Evidence of 'The great bath'.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 6

If '@' indicates either '+' or '×'; what will be the minimum value of '1@2@3@4@5'?

(Note: We have a choice to replace each of the four @ signs in the expression by either '+' or '×' operation)

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 6

1 × 2 = 2 and 1 + 2 = 3

Here minimum value obtained is 2 when we replace @ by × sign.

Again, we know that if we add the numbers, the value obtained will be minimum, and if we multiply the numbers, the value obtained will be maximum.

So, replacing first @ by × and remaining @ by +, we get:

1 × 2 + 3 + 4 + 5

= 2 + 3 + 4 + 5

= 14

Therefore, the minimum value of '1@2@3@4@5' is 14.

Hence, ‘14’ is the correct answer.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 7
Who has been appointed as the Governor of the state of Telangana in Sept, 2019?
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 7

The correct answer is Tamilisai Soundararajan.

Key Points

  • Dr. Tamilisai Soundararajan took charge as Governor of Telangana on 8th September 2019 and happens to be the 1st woman to hold this office.
    • Dr. Tamilisai Soundararajan (born 2 June 1961) is an Indian politician serving as the 2nd and current Governor of Telangana, also current Lieutenant Governor of Puducherry (Additional charge) as of 18 February 2021.
    • She was the National Secretary and Tamil Nadu State Unit President of the BJP prior to this appointment.

Additional Information

  • About Telangana:
    • Capital - Hyderabad.
    • State Animal - Jinka (Deer).
    • State Bird - Palapitta (Indian Roller or Blue Jay).
    • State Tree - Jand.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 8
Which African country launched the first Malaria vaccine to immunize children on the occasion of World Malaria Day?
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 8

The correct answer is Malawi.

Key Points

  • Malawi launched the first Malaria vaccine to immunize children on the occasion of World Malaria Day (observed on 25 April).
    • It was launched as part of a pilot program aimed at immunizing children aged 2 years and below in three African countries Malawi, Ghana, and Kenya.
    • The name of the Malaria vaccine was launched in Malawi as Mosquirix.
  • About Vaccine:
    • It is a recombinant protein-based malaria vaccine.
    • It is the world’s first and only malaria vaccine.
    • Its trade name is Mosquirix.

Additional Information

  • About Malawi:
    • Capital - Lilongwe.
    • Currency - Malawian kwacha.
    • National Sports - Football.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 9

Which country has the most successful cooperative farming?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 9

The correct answer is Denmark.

Key Points

  • A group of farmers forms a cooperative society by pooling in their resources voluntarily for more efficient and profitable farming.
  • Individual farms remain intact and farming is a matter of cooperative initiative.
  • Co-operative societies help farmers, to procure all important inputs of farming, sell the products at the most favourable terms and help in the processing of quality products at cheaper rates.
  • The co-operative movement originated over a century ago and has been successful in many western European countries like Denmark, Netherlands, Belgium, Sweden, Italy etc.
  • In Denmark, the movement has been so successful that practically every farmer is a member of a co-operative.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 10

If 12 + 22 + 32 + ....... + 142 = 1015, then 32 + 62 + 92 + ...... + 422 is equal to

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 10

Given:

⇒ 12 + 22 + 32 + ....... + 142 = 1015

Calculation:

⇒ 12 + 22 + 32 + ....... + 142 = 1015

Multiply by 9 to both sides,

⇒ 9 × (12 + 22 + 32 + ....... + 142 ) = 9 × 1015

⇒ 9 × 12 + 9 × 22 + 9 × 32 + ....... + 9 × 142 = 9 × 1015

⇒ 32 × 12 + 32 × 22 + 32 × 32 + ....... + 32 × 142 = 9 × 1015

∴ 32 + 62 + 92 + ...... + 422 = 9135

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 11

Seven chocolates A, B, C, D, E, F and G are bought at different costs between Rs. 40 and Rs. 50 (excluding 40 and 50) but not necessarily in the same order. The cost of chocolate C is five less than that of chocolate E. The cost of the chocolate A is a prime number. The cost of chocolate F is two more than that of chocolate A. The cost of chocolate F is more than that of chocolate E. The cost of chocolate D is an odd number. The cost of chocolate G is three more than the cost of chocolate D. None of the chocolates costs Rs. 44. The cost of chocolate B is an even number. Which is the following chocolates is costlier than E?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 11

Seven Chocolates: A, B, C, D, E, F and G.

Cost of Chocolates: Between Rs. 40 and Rs. 50

(1) The cost of the chocolate A is a prime number, implies A can be 41, 43, or 47.

(2) The cost of chocolate F is two more than that of chocolate A, (means F = A + 2), implies F can be 43, 45, or 49.

(3) The cost of chocolate F is more than that of chocolate E, (means F > E), implies E can be 48 or 46.

(4) The cost of chocolate C is five less than that of chocolate E, (means C = E - 5), implies C can be 43 or 41.

(5) The cost of chocolate D is an odd number, implies D can be 41, 43, or 45.

(6) The cost of chocolate G is three more than the cost of chocolate D, (means G = D + 3), implies G can be 44, 46, or 48.

(7) None of the chocolates costs Rs. 44. Therefore, G can be 46 or 48 and therefore D can be 43 or 45.

(8) The cost of chocolate B is an even number, implies B can only be 42. Thus the final arrangement is as follows:

We can see that among the options, G(48) is costlier than E (46).

Hence, G is the correct answer.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 12
Who formed the Indian National Congress?
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 12

The correct answer is A. O. Hume.

Key Points

  • A. O. Hume founded the Indian National Congress.
  • The Indian National Congress is a political party in India with widespread roots.
  • It was founded in 1885.

Important PointsSome important facts:

  • First Muslim President of Indian National Congress - Badruddin Tyabji.
  • First Female President of Indian National Congress - Annie Besant.
  • First Indian woman President of Indian National Congress - Sarojini Naidu.

Additional Information

  • Sir Pherozeshah Merwanjee Mehta KCIE was an Indian Parsi politician and lawyer from Bombay.
  • He was knighted by the British Government in India for his service to the law.'''
  • Dadabhai Naoroji, also known as the "Grand Old Man of India" and "Unofficial Ambassador of India".
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 13
The mean of 150 items was found to be 45. If at the time of calculation, two items were wrongly taken as 83 and 76 instead of 38 and 46, then the correct mean is:
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 13

Given:

Mean of 150 items = 45

Formula:

Average = (Sum of elements)/(Number of terms)

Calculation:

Sum of 150 items = 45 × 150 = 6750

Corrected sum of 150 items = 6750 - (83 + 76) + (38 + 46) = 6675

∴ Correct mean = 6675/150 = 44.5

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 14
There are five people A, B, C, D and E at a party, among whom there are two couples. They are employed as a teacher, a doctor, a lawyer, an accountant and an engineer, though not in the same order. The engineer is married to the teacher and C is the unmarried lawyer. D is an accountant. Teacher B is a female whose female friend is the accountant. Find which of the following could be true.
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 14

Five people - A, B, C, D and E

Profession - teacher, a doctor, a lawyer, an accountant and an engineer

1. The engineer is married to the teacher

2. C is the unmarried lawyer.

3. D is an accountant.

4. Teacher B is a female whose female friend is the accountant.

1. D is a male → False (As, D is female)

2. E is a teacher. → False (As, B is a Teacher)

3. B is a doctor. → False (As, B is a Teacher)

4. A is an engineer. → It can be possible as the profession of A is not known.

Hence, ‘A is an engineer’ is the correct answer.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 15

In Aug 2020, who was selected as the next Chairman of Steel Authority of India Limited?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 15

The correct answer is Soma Mondal.
Key Points

  • In Aug 2020, Soma Mondal was selected as the next Chairman of Steel Authority of India Limited.
  • Mondal's appointment was approved by the Appointments Committee of the Cabinet (ACC).
  • Soma Mondal replaced Anil Chaudhary as the chairman of SAIL.

Additional Information
About SAIL:

  • Headquarters: New Delhi
  • Founded: 24 January 1973
  • Subsidiaries: Bhilai Steel Plant, Rourkela Steel Plant, etc.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 16
The train fare, bus fare and air fare between 2 places are in the ratio 5 : 8 : 12, the number of passenger travelled by them is in the ratio 3 : 4 : 5 and the total fare collected on a particular day for these modes of transportation for a single trip is Rs. 1,07,000. Find the fare collected from the air passengers.
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 16

Given:

The ratio of train, bus, airfares = 5 : 8 : 12

The ratio of passengers traveling by train, bus, air = 3 : 4 : 5

Total fair collected for single trip = Rs.107000

Calculation:

Compound ratio of fares and number of travelers of train, bus and air =

= 5 × 3 : 8 × 4 : 12 × 5

= 15 : 32 : 60

Fare collected from air passengers = 60/(15 + 32 + 60) × 107000 = 60000

∴ Fare collected from air passengers is Rs.60000.

Hint

Compound ratio: When two or more ratios are multiplied term-wise, the ratio thus obtained is called compound ratio.

Two ratios = m : n and a : b

compound ratio = ma : nb

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 17

Find the value of:
√150 - √54 - √24

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 17

Given:

⇒ ? = √150 - √54 - √24

Calculation:

⇒ ? = √(25 × 6) - √(9 × 6) - √(4 × 6)

⇒ ? = √(5 × 5 × 6) - √(3 × 3 × 6) - √(2 × 2 × 6)

⇒ ? = 5√6 - 3√6 - 2√6

⇒ ? = √6(5 - 3 - 2)

∴ ? = 0

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 18

From the top of a cliff 25 m high, the angle of elevation of the top of a tower is found to be equal to the angle of depression of the foot of the tower. Find the height of the tower.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 18

Given:

PQ = RS = 25m

Calculation:

In right angled triangle PSR,

⇒ tan a = RS/PS = 25/PS

In right angled triangle PST,

⇒ tan a = TS/PS

Then,

⇒ 25/PS = TS/PS

⇒ TS = 25

Height of tower = RS + TS = 25 + 25 = 50m

∴ Height of tower is 50m.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 19

People with which of the following blood groups are considered as the universal recipient?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 19

The correct answer is AB+.
Key Points

  • Type AB-positive blood is called the "universal recipient" type because a person who has it can receive blood of any type.
  • Individuals with type O Rh D negative blood are often called universal donors.
  • However, these terms are only generally true with respect to possible reactions of the recipient's anti-A and anti-B antibodies to transfused red blood cells, and also possible sensitization to Rh D antigens.

Important Points
The blood group was discovered by Karl Landsteiner in 1901.
About Rh factor:

  • The Rh factor is a protein that can be found on the surface of red blood cells.
  • If your blood cells have this protein, you are Rh-positive.
  • If your blood cells do not have this protein, you are Rh-negative
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 20
6889 students are sitting in an auditorium in such a manner that there are as many students in a row as there are rows in the auditorium. How many rows are there in the auditorium?
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 20

Given:

Total number of students in auditorium = 6889

Calculation:

Let the number of students and number of rows be n.

⇒ n × n = 6889

⇒ n = √6889

⇒ n = 83

∴ There are 83 rows in the auditorium.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 21

Which famous author used the pen name Madhavikutty?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 21

The correct answer is Kamala Das.
Key Points

  • Kamala Das popularly known by her one-time pen name Madhavikutty and married name Kamala Das was an Indian poet in English as well as an author in Malayalam from Kerala, India.
  • Her popularity in Kerala is based chiefly on her short stories and autobiography, while her oeuvre in English, written under the name Kamala Das, is noted for the poems and explicit autobiography.
  • Some awards of Kamala Das:
    • 2002: Ezhuthachan Award
    • 2006: Muttathu Varkey Award

Additional Information
Books written by Kamala Das:

  • 1976: Alphabet of Lust
  • 2005: Vandikkalakal (novel)
  • 1996: Aattukattil (short novel)
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 22

What is the name of the Societal movement launched by the Union Minister of Environment, forest and climate change?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 22

The correct answer is Green Good Deeds.
Key Points

  • Green Good Deeds is the name of the Societal movement launched by the Union Minister of Environment, forest, and climate change.
  • Green Good Deeds movement was launched to protect the environment and promote good living in the country, has found acceptance by the global community.
  • The 'Green Good Deeds' initiative is about simple, practical steps that students/teachers/citizens can perform in their day-to-day life towards the protection of the environment.
  • The BRICS Ministerial on Environment was also agreed to include this movement in its official agenda.

Additional Information
About BRICS:

  • Founded: June 2006
  • Countries - Brazil, Russia, India, China, South Africa.
  • Headquarters - Shanghai, China.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 23
The focus of World Environment Day, 2018 was on _______
Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 23

The correct answer is Plastic Pollution.

Key Points

  • The focus of World Environment Day, 2018 was on Plastic Pollution.
  • The theme for 2018 is beating plastic pollution.
  • Every World Environment Day has a different global host country, where the official celebrations take place.
  • The focus on the host country helps highlight the environmental challenges it faces and supports the effort to address them.

Important Points

  • World Environment Day is celebrated on 5 June every year.
  • This day was first observed in 1974.
  • The theme for 2021 World Environment Day is Ecosystem Restoration.
RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 24

If 'p + q' implies 'p - q', 'p - q' implies 'p × q', 'p × q' implies 'p ÷ q' and 'p ÷ q' implies 'p + q', then find the value of 25 + 48 × 6 ÷ 12 - 2.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 24

Given expression: 25 + 48 × 6 ÷ 12 – 2

After replacing the symbols by their meaning, we get:

25 - 48 ÷ 6 + 12 × 2

= 25 – 8 + 24

= 49 – 8

= 41

Hence, ‘41’ is the correct answer.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 25

Select the number from among the given options that can replace the question mark (?) in the following series.

48, 32, 16, ?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 25

The logic is:

Hence, ‘0’ is the correct answer.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 26

Select the ordered pair of statements which are logically consistent with the main statement.
Main Statement:
Whenever Sakshi hears it's someone's birthday, she orders a cake.
A. Sakshi heard of someone's birthday.
B. Sakshi did not hear of someone's birthday.
C. Sakshi ordered a cake.
D. Sakshi did not ordered a cake.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 26

Main Statement:

Whenever Sakshi hears it's someone's birthday, she orders a cake.

Options:

1. DB

D. Sakshi did not ordered a cake.

B. Sakshi did not hear of someone's birthday.

The ordered pair of statements is logically consistent with the main statement.

Sakshi did not ordered a cake because Sakshi did not hear of someone's birthday. (As, whenever Sakshi hears it's someone's birthday, she orders a cake)

2. BD

B. Sakshi did not hear of someone's birthday.

D. Sakshi did not ordered a cake.​

The ordered pair of statements is logically not consistent with the main statement.

Whenever Sakshi hears it's someone's birthday, she orders a cake. So, Sakshi did not hear of someone's birthday, the later is known from the main statement. The statement D is unnecessary.

3. AB

A. Sakshi heard of someone's birthday.

B. Sakshi did not hear of someone's birthday.

The ordered pair of statements is logically not consistent with the main statement.

The pair of statements have absurd meaning.

4. CA

C. Sakshi ordered a cake.

A. Sakshi heard of someone's birthday.

The ordered pair of statements is logically not consistent with the main statement.

Whenever Sakshi hears it's someone's birthday, she orders a cake. So, Sakshi ordered a cake because of the fact we know from the main statement. The statement A is unnecessary.

Hence, ‘DB’ is the correct answer.

Confusion Points
The options "AB" and "DB" are not the same. This is because in the direction of the question it is mentioned that the options are ordered pairs.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 27

You are given 3 sets of arguments, each containing three sentences. Select the set(s) in which the third statement is a logical conclusion of the first two statements.

A. (i) All shops are showrooms.

(ii) No showroom is a mall.

(iii) All shops are not malls.

B (i) No Japanese can dance.

(ii) All Americans are books.

(iii) Americans and Japanese can dance.

C. (i) No P is Q.

(ii) No Q is R.

(iii) No P is R.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 27

A. (i) All shops are showrooms.

(ii) No showroom is a mall.

(iii) All shops are not malls. → True (As, All shops are showrooms and No showroom is a mall → All shops are not malls)

B (i) No Japanese can dance.

(ii) All Americans are books.

(iii) Americans and Japanese can dance. → False (As, there is no definite relation between Americans and Dance. Hence, false and No Japanese can dance)

C. (i) No P is Q.

(ii) No Q is R.

(iii) No P is R. → False (As, there is no definite relation between P and R. Hence, false)

Hence, ‘Only A’ is the correct answer.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 28

The following bar graph shows the number of web series released by a subscription service mobile application in various years from 2014-2018. What is the average number of web series released by the subscription service mobile application from 2015 to 2018?

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 28

Calculation:
Total number of web series released by subscription from 2015 to 2018
⇒ 35 + 35 + 42 + 48 = 160
⇒ 160/4 = 40
∴ The average number of web series released by the subscription service mobile application from 2015 to 2018 is 40

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 29

The following table shows the cost price of five different goods and their selling prices by two different shopkeepers.

Identify the shopkeeper who made more profit (in total) and his/her percentage profit.

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 29

Calculation:

Cost price of all five goods = 173 + 219 + 350 + 481 + 227 = Rs.1450

Total selling price of all five goods for shopkeeper X = 180 + 220 + 360 + 490 + 250 = Rs.1500

Total selling price of all five goods for shopkeeper Y = 175 + 225 + 357 + 500 + 235 = Rs.1492

Profit % of shopkeeper X = (1500 - 1450)/1450 × 100 = 3.45%

Profit % of shopkeeper Y = (1492 - 1450)/1450 × 100 = 2.90%

∴ Shopkeeper X have more profit percentage, which is 3.45%.

RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 30

Identify the number from among the given options that does NOT belong to the following series.

243, 280, 172, 230, 92, 41, 14

Detailed Solution for RRB NTPC CBT 1 Question Paper (Held On: 29 Dec 2020 Shift 1) - Question 30

The logic is as follows:

243 → This number is multiple of 3.

280 → This number is multiple of 7, 5 and 2.

172 → This number is multiple of 2.

230 → This number is multiple of 2, 5 and 23.

92 → This number is multiple of 2 and 23.

41 → This number is a prime number.

14 → This number is multiple of 2 and 7.

Hence, 41 is the odd one out.

Note: For this question, discrepancy is found in the question paper so we have improvised this question.

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