Numerical Aptitude Questions and Answers
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Which one of the following is not a prime number?
Answer & Explanation:
Answer: Option D
Explanation: 91 is divisible by 7. So, it is not a prime number.
(112x54)=?;
Answer & Explanation:
Answer: Option B
Explanation:
It is being given that (232 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?
Answer & Explanation:
Answer: Option D
Explanation:
What least number must be added to 1056, so that the sum is completely divisible by 23 ?
Answer & Explanation:
Answer: Option A
Explanation: If the number 1056 is completely divisible by 23 means, remainder should come zero.
But if we divide 1056 by 23, the remainder is 2.
So if 2 is added to the 1056, we get remainder 0.
Therefore solution is 2
1397 x 1397 = ?
Answer & Explanation:
Answer: Option A
Explanation: 1397 x 1397 = (1397)2
= (1400 - 3)2
= (1400)2 + (3)2 - (2 x 1400 x 3)
= 1960000 + 9 - 8400
= 1960009 - 8400
= 1951609.
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