## Question

**What will come in the place of the question (?) mark in the following number series? ****4620, 420, 60, ?, 4, 2**

A. 48

B. 12

C. 30

D. 25

**Answer:** B

**Solution:**

The Prime no is 2, 3, 5, 7, 11,…

420 * 11 = 4620

60 * 7 = 420

x * 5 = 60 <=> **x = 12**

4 * 3 = 12

2 * 2 = 4

so, the answer is **X = 12**.