Question

the three digit number XYZ is divisible by 9 if....​

Answer 1

Answer:

As it is divisible by 9 then x+2+y+1+z must be divisible by 9. So x+y+z+3 must be divisible by 9. Then x+y+z must be divisible by 3 and must not be divisible by 9. So x+y+z should be equals to 6,15,24,33.