Question

In the number 2313X replace X with the smallest whole number to make it divisible by 4.

• A. 1
• B. 3
• C. 2
• D. 0

Answer 1

The correct option is C

2

A number is divisible by 4 only when the number formed by its last two digits( i.e., tens and one's digits) is divisible by 4.

Consider the last two digits of 2313X

3X should be divisible by 4

If x = 0 then last two digits become 30 which is not divisible by 4,

If X = 1 , then the last two digits become 31 which is not divisible by 4

If X = 3 then the last two digits become 33 which is not divisible by 4

If x = 2 , then the last two digits become 32 which is divisible by 4

Hence the least value of X will be 2