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Aryan DesaiEduRev Class 7 |
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Aryan Desai
EduRev Class 7
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Rated 5 
by Aryan
by Aryan | L28 : Questions - Playing With Numbers , Maths, Class 6 Video | 08:07 min |  |
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Discussed Questions
((1/4)^-4 -(1/2)^3) +(1/5)^2?
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Aryan Desai answered • 4 weeks ago |
Step 1: Evaluate Each Expression
- To solve the expression ((1/4)^-4 - (1/2)^3) + (1/5)^2, we begin by evaluating each part separately.
1. Evaluate (1/4)^-4
- Negative exponent means we take the reciprocal:
(1/4)^-4 = (4/1)^4 = 4^4
- 4^4 = 256
2. Evaluate (1/2)^3
- (1/2)^3 = 1/2 * 1/2 * 1/2 = 1/8
3. Evaluate (1/5)^2
- (1/... more
- To solve the expression ((1/4)^-4 - (1/2)^3) + (1/5)^2, we begin by evaluating each part separately.
1. Evaluate (1/4)^-4
- Negative exponent means we take the reciprocal:
(1/4)^-4 = (4/1)^4 = 4^4
- 4^4 = 256
2. Evaluate (1/2)^3
- (1/2)^3 = 1/2 * 1/2 * 1/2 = 1/8
3. Evaluate (1/5)^2
- (1/... more
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Aryan Desai upvoted • 4 weeks ago |
A triangle in which two sides are of equal lengths is called _______________.- a)scalene
- b)acute-angled
- c)equilateral
- d)isosceles
Correct answer is option 'D'. Can you explain this answer?
A triangle in which two sides are of equal lengths is called _______________.
a)
scalene
b)
acute-angled
c)
equilateral
d)
isosceles
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Praveen Kumar answered |
AB is the hypotenuse ⇒ C has the right angle.
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Aryan Desai upvoted • Feb 13, 2025 |
There are 2 red, 3 blue and 5 black balls in a bag. A ball is drawn from the bag without looking in to the bag. What is the probability of getting a non-red ball?- a)4/5
- b)2/5
- c)3/5
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
There are 2 red, 3 blue and 5 black balls in a bag. A ball is drawn from the bag without looking in to the bag. What is the probability of getting a non-red ball?
a)
4/5
b)
2/5
c)
3/5
d)
None of these
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Shiksha Academy answered |
As we can see in the bar graph , Sharanya and Shravan have secured the same marks.
What is atmosphere?
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Aryan Desai answered • Feb 13, 2025 |
What is Atmosphere?
The atmosphere is a layer of gases surrounding a planet, held in place by gravity. Earth’s atmosphere is essential for supporting life and plays a critical role in various environmental processes.
Composition of the Atmosphere
- The atmosphere is made up of several gases, primarily:
- Nitrogen (78%)
- Oxygen (21%)
- Argon (0.93%)... more
The atmosphere is a layer of gases surrounding a planet, held in place by gravity. Earth’s atmosphere is essential for supporting life and plays a critical role in various environmental processes.
Composition of the Atmosphere
- The atmosphere is made up of several gases, primarily:
- Nitrogen (78%)
- Oxygen (21%)
- Argon (0.93%)
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Aryan Desai upvoted • Jan 22, 2025 |
Mr Gessler smiled while replying the question because he- a)agreed with the speaker
- b)felt proud of his work
- c)was pleased that someone had praised him
- d)none of the above
Correct answer is option 'B'. Can you explain this answer?
Mr Gessler smiled while replying the question because he
a)
agreed with the speaker
b)
felt proud of his work
c)
was pleased that someone had praised him
d)
none of the above
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Torcia Education answered |
Mr. Gessler smiled while replying to the question because he felt proud of his work. He knew that his boots were made with care and precision, and he took great pride in the quality of his craftsmanship.
How does the body vomit?
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Aryan Desai answered • Jan 14, 2025 |
Understanding the Vomiting Process
Vomiting, or emesis, is a complex reflex action that the body uses to expel unwanted substances from the stomach. It involves multiple systems working in unison.
Triggers for Vomiting
- Gastrointestinal Irritation: Infections, toxins, or irritants in the stomach can trigger vomiting.
- Motion Sickness: The brain re... more
Vomiting, or emesis, is a complex reflex action that the body uses to expel unwanted substances from the stomach. It involves multiple systems working in unison.
Triggers for Vomiting
- Gastrointestinal Irritation: Infections, toxins, or irritants in the stomach can trigger vomiting.
- Motion Sickness: The brain re... more
Why is tourism important in Ladakh for class 7 CBSE?
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Aryan Desai answered • Dec 23, 2024 |
Importance of Tourism in Ladakh
Tourism plays a crucial role in the development and economy of Ladakh. This beautiful region, known for its stunning landscapes and rich cultural heritage, attracts visitors from all over the world. Here are some key reasons why tourism is important in Ladakh:
1. Economic Growth
- Tourism contributes significantly to the local economy by... more
Tourism plays a crucial role in the development and economy of Ladakh. This beautiful region, known for its stunning landscapes and rich cultural heritage, attracts visitors from all over the world. Here are some key reasons why tourism is important in Ladakh:
1. Economic Growth
- Tourism contributes significantly to the local economy by... more
A man spends 92 percent of his income if he saves 220 find his income?
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Aryan Desai answered • Nov 29, 2024 |
Understanding the Problem
To find the man's income based on his savings and spending habits, we need to interpret the percentage of income he spends and what he saves.
Given Information
- The man spends 92 percent of his income.
- He saves 220.
Calculating the Income
1. Identify the Percentage Saved
- If he spends 92 percent of his i... more
To find the man's income based on his savings and spending habits, we need to interpret the percentage of income he spends and what he saves.
Given Information
- The man spends 92 percent of his income.
- He saves 220.
Calculating the Income
1. Identify the Percentage Saved
- If he spends 92 percent of his i... more
Census definition?
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Aryan Desai answered • Oct 30, 2024 |
Census Definition
A census is a systematic process of collecting, analyzing, and interpreting data about the population of a country or region. It is conducted at regular intervals and aims to gather comprehensive information on various demographic, social, and economic aspects.
Purpose of a Census
- Population Count: To determine the total number of people resi... more
A census is a systematic process of collecting, analyzing, and interpreting data about the population of a country or region. It is conducted at regular intervals and aims to gather comprehensive information on various demographic, social, and economic aspects.
Purpose of a Census
- Population Count: To determine the total number of people resi... more
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Aryan Desai upvoted • Oct 07, 2024 |
what do you mean by crystal
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Shilpa Das answered |
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific st... more
16 is to power 2?
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Aryan Desai answered • Oct 07, 2024 |
Understanding Powers
When we talk about "16 is to power 2," we are referring to the mathematical operation known as exponentiation. In this case, "16 to the power of 2" is expressed as 16 raised to the exponent 2.
What Does It Mean?
- Exponentiation involves two numbers: the base and the exponent.
- Here, 16 is the base, and 2 is the exponent.
-... more
When we talk about "16 is to power 2," we are referring to the mathematical operation known as exponentiation. In this case, "16 to the power of 2" is expressed as 16 raised to the exponent 2.
What Does It Mean?
- Exponentiation involves two numbers: the base and the exponent.
- Here, 16 is the base, and 2 is the exponent.
-... more
What is the central theme of the poem "Courage!" by Edgar Albert Guest?- a) Love and friendship
- b) Perseverance and fortitude
- c) Nature and beauty
- d) Wealth and success
Correct answer is option 'B'. Can you explain this answer?
What is the central theme of the poem "Courage!" by Edgar Albert Guest?
a)
Love and friendship
b)
Perseverance and fortitude
c)
Nature and beauty
d)
Wealth and success
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Aryan Desai answered • Sep 09, 2024 |
Central Theme of "Courage!" by Edgar Albert Guest
The poem "Courage!" by Edgar Albert Guest emphasizes the significance of perseverance and fortitude in overcoming challenges. This central theme resonates throughout the poem, encouraging readers to embrace courage in adversity.
Perseverance in Adversity
- The poem highlights that courage is not the absence of fear but ... more
The poem "Courage!" by Edgar Albert Guest emphasizes the significance of perseverance and fortitude in overcoming challenges. This central theme resonates throughout the poem, encouraging readers to embrace courage in adversity.
Perseverance in Adversity
- The poem highlights that courage is not the absence of fear but ... more
What could be the substance X?- a)salt
- b)water
- c)base
- d)acid
Correct answer is option 'C'. Can you explain this answer?
What could be the substance X?
a)
salt
b)
water
c)
base
d)
acid
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Aryan Desai answered • Sep 09, 2024 |
Understanding Substance X
Substance X is identified as a base in the options provided: salt, water, acid. Here’s a detailed explanation of why "C) Base" is the correct answer.
What is a Base?
- Bases are substances that can accept hydrogen ions (H+) and produce hydroxide ions (OH-) in solution.
- They typically have a bitter taste and slippery feel.
- Common ... more
Substance X is identified as a base in the options provided: salt, water, acid. Here’s a detailed explanation of why "C) Base" is the correct answer.
What is a Base?
- Bases are substances that can accept hydrogen ions (H+) and produce hydroxide ions (OH-) in solution.
- They typically have a bitter taste and slippery feel.
- Common ... more
WHAT IS THE CORRECT WAY OF MAKING A SOLUTION OF ACID IN WATER?
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Aryan Desai answered • Aug 20, 2024 |
How to Make a Solution of Acid in Water
Gather Materials
- You will need a clean container, distilled water, and the acid of your choice.
Prepare the Container
- Make sure the container is clean and dry before starting.
Measure Water
- Measure out the correct amount of distilled water using a m... more
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Aryan Desai asked • Nov 02, 2019 |
Directions: In each of the following letter series, some of the letters are missing, which are given in such order as one of the alternatives below it. Choose the correct alternative._bcc _ ac _ aabb _ ab _ cc- a)aabca
- b)abaca
- c)bacab
- d)bcaca
Correct answer is option 'C'. Can you explain this answer?
Directions: In each of the following letter series, some of the letters are missing, which are given in such order as one of the alternatives below it. Choose the correct alternative.
_bcc _ ac _ aabb _ ab _ cc
a)
aabca
b)
abaca
c)
bacab
d)
bcaca
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Vaibhav Shah answered |
The series is,
bbccaa / ccaabb / aabbcc.
The pairs of the letters are moving in cyclic order.
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Aryan Desai asked • Oct 22, 2019 |
Study the pattern and find the missing number.
- a)35
- b)36
- c)37
- d)38
Correct answer is option 'C'. Can you explain this answer?
Study the pattern and find the missing number.
a)
35
b)
36
c)
37
d)
38
|
Shama choudhary answered |
From figure I 7 × 4 – 5 × 3 = 28 – 15 = 13
From figure II 9 × 6 – 7 × 3 = 54 – 21 = 33
From figure III 8 × 9 – 7 × 5 = 72 – 35 = 37
From figure II 9 × 6 – 7 × 3 = 54 – 21 = 33
From figure III 8 × 9 – 7 × 5 = 72 – 35 = 37
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Aryan Desai asked • Oct 18, 2019 |
Each of the following questions consists of two words that have a certain relationship with each other, followed by four lettered pairs of words. Select the lettered pair which has the same relationship as the original pair of words.
Q. Border : Country- a)Pen : Cap
- b)Book : Cover
- c)Handle : Shade
- d)Frame : Picture
Correct answer is option 'D'. Can you explain this answer?
Each of the following questions consists of two words that have a certain relationship with each other, followed by four lettered pairs of words. Select the lettered pair which has the same relationship as the original pair of words.
Q. Border : Country
Q. Border : Country
a)
Pen : Cap
b)
Book : Cover
c)
Handle : Shade
d)
Frame : Picture
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Prisha Choudhary answered |
First is the boundary of the second.
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Aryan Desai asked • Oct 16, 2019 |
- a)9/35
- b)
- c)3/35
- d)
Correct answer is option 'B'. Can you explain this answer?
a)
9/35
b)
c)
3/35
d)
|
Harshad Shah answered |
Given expression
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Aryan Desai asked • Oct 12, 2019 |
If TRUTH is coded as SUQSTVSUGI, then the code for FALSE will be- a)FGZBKNRTDF
- b)EGZBKMRDE
- c)EGZKMRTDF
- d)EGZBKMRTDF
Correct answer is option 'D'. Can you explain this answer?
If TRUTH is coded as SUQSTVSUGI, then the code for FALSE will be
a)
FGZBKNRTDF
b)
EGZBKMRDE
c)
EGZKMRTDF
d)
EGZBKMRTDF
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Naina Iyer answered |
Each letter of the word ‘TRUTH’ is replaced by a set of two letters – one preceding it and the other following it – in the code. Thus, T is replaced by SU, R is replaced by QS and so on.
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Aryan Desai asked • Oct 08, 2019 |
If in a single line, Mohan is 23rd from both the ends. How many boys are there in the class?- a)44
- b)45
- c)46
- d)47
Correct answer is option 'B'. Can you explain this answer?
If in a single line, Mohan is 23rd from both the ends. How many boys are there in the class?
a)
44
b)
45
c)
46
d)
47
|
Nitin Iyer answered |
Required no. of boys = 22 + 1 + 22 = 45
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Aryan Desai asked • Oct 02, 2019 |
Directions: In each of the following questions, there is a certain relationship between two given words on one side of : : and one word is given on the other side of : : Find out the word from the given alternatives, having the same relation with this word as the words of the given pair bear.Q. Melt : Liquid :: Freeze : ?- a)Ice
- b)Condense
- c)Solid
- d)Force
Correct answer is option 'C'. Can you explain this answer?
Directions: In each of the following questions, there is a certain relationship between two given words on one side of : : and one word is given on the other side of : : Find out the word from the given alternatives, having the same relation with this word as the words of the given pair bear.
Q. Melt : Liquid :: Freeze : ?
a)
Ice
b)
Condense
c)
Solid
d)
Force
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Subham Nair answered |
As on melting, liquid is formed, similarly on freezing solid is formed.
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Aryan Desai asked • Sep 28, 2019 |
Choose the odd one out from the following.- a)Silicon
- b)Potassium
- c)Gallium
- d)Germanium
Correct answer is option 'B'. Can you explain this answer?
Choose the odd one out from the following.
a)
Silicon
b)
Potassium
c)
Gallium
d)
Germanium
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Naina Iyer answered |
All except potassium are metal used in semiconductor devices.
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Aryan Desai asked • Sep 25, 2019 |
Ashok is 8th from the left and Sanjay is 14th from the right end in a row of boys. If there are 12 boys between Ashok and Sanjay, how many boys are there in the row?- a)32
- b)33
- c)34
- d)35
Correct answer is option 'C'. Can you explain this answer?
Ashok is 8th from the left and Sanjay is 14th from the right end in a row of boys. If there are 12 boys between Ashok and Sanjay, how many boys are there in the row?
a)
32
b)
33
c)
34
d)
35
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Saikat Rane answered |
To solve this problem, we need to analyze the given information step by step.
1. Ashok is 8th from the left end:
This means that there are 7 boys to the left of Ashok.
2. Sanjay is 14th from the right end:
This means that there are 13 boys to the right of Sanjay.
3. There are 12 boys between Ashok and Sanjay:
This means that there are 12 boys betw... more
1. Ashok is 8th from the left end:
This means that there are 7 boys to the left of Ashok.
2. Sanjay is 14th from the right end:
This means that there are 13 boys to the right of Sanjay.
3. There are 12 boys between Ashok and Sanjay:
This means that there are 12 boys betw... more
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