# 100+ Number System Questions and Answers for Bank Exams - 1

Question: 1

98^{th} term of the infinite series 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, …… is

(A) 1

(B) 2

(C) 3

(D) 4

Ans: B

Given series is 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4,….

Therefore, 96th term is 4. So, T_{97} = 1 and T_{98} = 2.

Hence, the 98^{th} term is 2.

Question: 2

Find the multiple of 11 in the following numbers.

(A) 978626

(B) 869756

(C) 447355

(D) 447355

Ans: A

In 978626, we have (6 + 6 + 7) – (2 + 8 + 9) = 0.

Hence, 978626 is completely divisible by 11.

Question: 3

If the numbers from 1 to 24, which are divisible by 2 are arranged in descending order, which number will be at the 8th place from the bottom?

(A) 18

(B) 16

(C) 12

(D) 10

Ans: B

These numbers are 24, 22, 20, 18, 6, 14, 12, 10, 8, 6, 4, 2.

8^{th} number from the bottom is 16.

Question: 4

Which of the following numbers is not divisible by 18?

(A) 34056

(B) 50436

(C) 54036

(D) 65043

Ans: D

We have 18 = 2 x 9, where 2 and 9 are co-primes.

But, 65043 is not divisible by 2.

So, it is not divisible by 18.

Question: 5

Which of the following is not a prime number?

(A) 43

(B) 29

(C) 23

(D) 21

Ans: D

Clearly, 21 = 3 x 7, so 21 is not prime.

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