Numbers Aptitude Test Paper 2

The Correct answer is (D)

Answer with explanation:

A number is divisible by 9 if the sum of its digits is divisible by 9.

Sum of the digits of the given numbers are;

6+7+5+7+8= 33

5+6+7+8+5= 31

4+5+6+7+8= 30

6+5+8+8+9= 36

The sum of the digits of the number 65889 is 36 which is divisible by 9, so the correct answer is 65889.

The Correct answer is (B)

Answer with explanation:

In such questions, each alternative should be tried.

So, if P = 3, we will get; 8 + 1= 9

If P = 4, we will get; 16 + 1 = 17

If P = 5, we will get; 32 + 1 = 33

If P= 6, we will get; 64 + 1= 65

Out of the four results, only 17 is the prime number. So, the required value of the P is 4.

The Correct answer is (A)

Answer with explanation:

The required three digit numbers would be 102, 108, 114, 120...990 and 996.

The sequence of numbers shows that it is an arithmetic progression, where 'a' = 102, 'd' = 6 and last number = 996

Let the number of terms = n

The Correct answer is (B)

Answer with explanation:

First 35 natural numbers are 1, 2, 3, 4, 5.....35

The Correct answer is (C)

Answer with explanation:

11+12+13+...+19 is an arithmetic progression with number of terms 'n' = 9, first term = 11 and last term = 19.

Apply formula; Sn = n/2 (first term + last term)

∴Required value or sum = 9/2 ( 11 + 19)

= 4.5 * 30 = 135