Aptitude and Reasoning Questions

Q:

By which least number should 5000 be divided so that it becomes a perfect square?

A) 2 B) 5
C) 10 D) 15
 
Answer & Explanation Answer: A) 2

Explanation:
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Q:

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

A) 540 B) 270
C) 108 D) 90
 
Answer & Explanation Answer: A) 540

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Q:

Find the missing number?

A) 216 B) 1024
C) 1296 D) 2024
 
Answer & Explanation Answer: C) 1296

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Q:

Product of three consecutive odd numbers is 1287. What is the largest of the three numbers?

A) 9 B) 11
C) 13 D) 17
 
Answer & Explanation Answer: C) 13

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Q:

For what value of X, 211X will be a perfect square?

A) 4 B) 5
C) 6 D) 9
 
Answer & Explanation Answer: C) 6

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Q:

A prime number contains the digit X at unit’s place. How many such digits of X are possible?

A) 3 B) 4
C) 5 D) 6
 
Answer & Explanation Answer: D) 6

Explanation:
For prime no units place cannot be occupied by even number except for 2
Thus no of digits occupying unit digit of prime numbers = 6 (1,2,3,5,7,9)
Example 2,3,5,7,11,19 in itself are prime numbers
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Q:

Consider the following statements in respect of two integers p and q (both > 1) which are relatively prime:

1) Both p and q may be prime numbers.

2) Both p and q may be composite numbers

3) one of p and q may be prime and the other composite.

Which of the above statements are correct?

 

 

A) 1 and 2 only B) 2 and 3 only
C) 1 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: D) 1, 2 and 3

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Q:

What is 0.53 + 0.53equal to ?

A) 1.068 B) 1.072
C) 1.082 D) 1.096
 
Answer & Explanation Answer: A) 1.068

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