Question

replace * by the smallest number in 5407 *to make it divisible by 9

Answer 1

Answer:

for divisibility by nine we neet the sum of the digits to be divisible by 9

so 5+4+0+7

=16

now 16 is not divisible by 9 so the closest multiple of 9 is 18

18-16

=2

thus 0 should be replaced by 2