Question

If 24x is a multiple of 3, where x is a digit, what is the value of x?
(Since 24x is a multiple of 3, its sum of digits 6 + x is a multiple of 3; so 6+ x is one
of these numbers: 0,3,6,9, 12, 15, 18, .... But since x is a digit, it can only be that
6+x=6 or 9 or 12 or 15. Therefore, x = 0 or 3 or 6 or 9. Thus, x can have any of
four different values.)​

Answer 1

Answer:

in the place of is =0,3,6,9