Question

if 31a5 is a multiple of 3 where a is a digit what are the value of a​

Answer 1

Answer:

0, 3, 6 and 9.

Step-by-step explanation:

A number is divisible by 3 if the sum of its digits is a number divisible by 3.

3+1+5 = 9.

9 is divisible by 3.

Hence, the smallest value of a is 0. Value of a can also be 3, 6 and 9.