Question

solve these two questions please

Answer 1

1. we know the divisiblity test of 3 I.e. the sum of the digits in a number is divisible by 3 then the number is divisible by 3

so

7x3

sum of digits

= 7 + x + 3

= 10 + x

so nearest dividend of 3 from 10 is 12

so x = 2

Then 15

x = 5

Then 18

x = 8

Then 21

so x = 11

it is NO valid because it contains 2 digits

so the numbers are

723 , 753 , 783