Question

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

Answer 1

divisibility rule of 3 : sum of the numbers given should divisible by 3 .

so , 3+4+5+7=19

3×7=21

21_19=2

so A=2

Answer 2

Answer:

Step-by-step explanation:

the divisibility rule for three is the sum of the digits should be divisible by three

so 3+4+5+7=19 and that is not divisible by three so what number can be added to this to make it divisible

you can add 2 to make it 21 and it is divisible by three so the a can be replaced by two