RRB NTPC Previous Year Paper (Ahmedabad) - 2012 - RRB Group D / RPF Constable MCQ

The series from the right is 24 x 1, 24 x 3, 24 x 5, 24 x 7 and 24 x 9.

For example, 
24 x 1 = 24
24 x 3 = 72
24 x 5 = 120
24 x 7 = 168
24 x 9 = 216

So, the wrong number is 163. The correct number is 24 x 7 = 168

The equation uses the middle number in the hundred's place, the rightmost number in the tenth's place and the left most letter in the unit's place. So, the number to be used in the place of the question mark is 6.

12 can be written as 7 + 7 - 2 x 1.

So, the answer is + - x which is option (b).

In all other options, the equation doesn't match.

The code uses the same letters as the original word but in an inverted fashion. So, EXOTIC is coded as CITOXE.

The code uses the letters in the alphabetical series in an inverted fashion. For example: A is used in the place of Z, B in the place of Y, etc. Also they are inverted. So, The last letter comes first in the code. So, I is replaced with R, K with P, M with N and O with L. The code is LNPR.

The letters strictly follow the alphabetical series. So, next set of letters will be DHL

The series is a follows

1 x 1

2 x 3

3 x 5

4 x 7

5 x 9

6 x 11

7 x 13, etc

The numbers on the left increase by 1 and the numbers on the right increase by 2

Diamond is the hardest of the four but is not a metal. The other three are metals.

The customer is the end user of the products. All others are in the business of selling the product.

Engineering is a professional degree obtained by years of education and training.

Magmolia is an incorrect spelling. The correct spelling is Magnolia. Hence it is the odd one out. The rest are names of flowers.

Jaundice is itself not a disease. It is the yellowing of skin and eyes which is the symptom of an underlying liver condition. The others are diseases.

Sonu is Suresh's son. Suresh's lineage-name is Sharma. So, Sonu's lineage-name is Sharma.

Suresh is the paternal uncle of Sudha as he is Sudha's dad's brother

Asha is the paternal aunt of Sudha as she is Sudha's dad's sister.

Mrs. Mahajan is Radha's mother whereas Ritu is Sonu's mother. So, none of these is the correct answer.

The first two letters are inverted and the last two letters are inverted in the code word. So, the corresponding code for REEK is ERKE

The silkworm is useful in the manufacture of silk saree. Likewise the cobra venom is useful in making medicines.

L is the 12th alphabet and M is the 13th alphabet. Likewise, U is the 21 st and W 23rd alphabet.

A is the first letter of the alphabetical series. F is the sixth letter

Delusion, Mirage and Dilemma are a state of mind that is related to confusion. Identification is related to clarity of thought. So, identification is the odd one out.

Moon is earth's satellite. All others are planets.

In option (c), the two numbers are co-prime, ie don't have any common factors while the rest are not

Just like shoes are made of leather, a shirt can be made of cotton, thread or cloth. Option c) is the correct answer.

Just like bacteria brings disease, war brings destructions. Hence (d) is the right answer.

(l - 5)(b+3) = lb - 9 .... (1)

(l+ 3)(b+2) = lb + 67 ...... (2)

(1) => lb - 5b + 3l -15 = lb - 9

or 3l - 5b = 6

(2) = > lb + 3b + 2l + 6 = lb + 67

or 2l + 3b = 61

from these equations, l = 17 m

Number of people who like fish = 50

Number of people who like chicken = 60

Let the number of people who like both fish and chicken = x

Number of people who do not like fish = 50

Number of people who do not like chicken = 100 - 60 = 40

Number of people who do not like either fish or chicken = 10

So, number of people who do not like either fish or chicken or both = 40 + 50 - 10 = 80

Number of people who like at least one of the two dishes = 50 + 60 - x = 100 - Number of people who do not like both the dishes = 100 - 10 = 90

=> x = 20

So, 20 people like both the dishes

Let there be x successful candidates in the exam.

Unsuccessful candidates = 120 - x

Total score = 35 x 120

Total score is also equal to x * 39 + (120 - x) * 15

So, x = (35 * 120 - 120 * 15)/ 24 = 120 * 20 / 24 = 100

Since by sending 10 candidates from P into Q, they become equal, the difference between P and Q is 20. Let P have x and Q have "x-20" candidates. But 2*( "x-20" -20) = x+20

So, x = 100 candidates.

Let the number be xy. So 10 x +y = k (x + y)

which is inverse of the number divided by the sum of the digits.

Hence the required factor is 11 - k