Question

Plz answer it a math challenge​

Answer 1

Step-by-step explanation:

a. Divisibility rule of 3 and  9 is the sum of digits of a number should divisible by  3  or 9.

                               =3+1+2+6+4+2=18

                    18 is divisible 3 so 312642 is  divisible by 3

                    18 is divisible 9 so 312642 is  divisible by 9

b. Divisibility rule of 6 is the given number should divisible by 2 and 3  then the number is divisible by 6

                   47214 is divisible by 2 and 3

                   Then 47214 is divisible by 6.