Question

If 345A7 is divisible by 3, supply the missing digit in place of 'A'.

Answer 1

hey guys 345A7 here A can be 5

Answer 2

Answer:

The value of A can be 2 or 5 or 8.

Step-by-step explanation:

A number is divisible by 3 when the sum of all of its digit is divisible by 3.

Here, the given number is,

345A7,

Sum of its digit = 3 + 4 + 5 + A + 7 = 19 + A,

Since, A must be an integer,

So, there are 3 possible value of A,

For A = 2, the sum is 21,  which is multiple of 3,

⇒ 345A7 is divisible is 3.

For A = 5, the sum is 24, the sum is 21,  which is multiple of 3,

⇒ 345A7 is divisible is 3.

For A = 8,  the sum is 27, the sum is 21,  which is multiple of 3,

⇒ 345A7 is divisible is 3.