Question

Which is the smallest number will be added to 31547821 to make it divisible by 3.

Answer 1

Answer:

2 should be added.

Step-by-step explanation:

When we add 2 to 31547821 we get, 31547823 which is divisible by 3.

( To check if a no. is divisible by 3, we need to add all the digits in the no. and check if the that sum is divisible by 3,

3+1+5+4+7+8+2+1= 31

31+2=33 which is divisible by 3.)

Answer 2

Answer:

2

Step-by-step explanation:

3+1+5+4+7+8+2+1 = 31

To make it a multiple of 3 the sum of the digits has to be a multiple of 3

Closest multiple is 33

33 - 31 is 2.