Question

In each of the following numbers replace * by the smallest number to make it divisible by 3 (1) 27*4

Answer 1

2+7+4+*=13+*

13+2=15

so ...........,,,,

*=2

Answer 2

For a number to be divisible by 3 , the sum of it's digits should be a multiple of three.

Example

105 => 1 + 0 + 5 = 6

Six is a multiple of 3, Hence,105 is divisble by 3

_______________________________

For

27*4

The sum is

2 + 7 + 4 = 13

Now,

15 is the next multiple of 3

13 + 2 = 15

Hence,

* = 2

$\bf{\green{VERIFICATION}}$

2724

=> 2 + 7 + 2 + 4

=> 15

15 is a multiple of 3

Hence, 2724 is divisible by 3

(* = 2)