Question

if 1a548 is divisible by 3,then the value of 'a'is

Answer 1

Divisibility rule says whetehr the number is divisible by the given divisor or not. Using divisibility rule for the number "3" we can say whether the number is divible by it or not.

Given that, 1a548 is divisible by 3. => 1+a+5+4+8 is a multiple of 3.

=> 18+a is divisible by three.

this can happened when a=0, or a=3,6,etc (i.e. multiples of 3).