Question

Find the missing digit to make 18,59_ divisible by 9.

Answer 1

which digit makes the some of all digits dividible by 9?

Answer 2

4

Answer 3

any number divisible by nine must have the sum of its digit also divisible by nine.
use this property

Answer 4

the rule of divisibility of 9 says that the sum of all digits must be nine. So, 1 + 8 + 5 + 9 + ? = a number divisible by 9. So, 23 + ? = 9 or 18 or 27 or 36 ... (remember x is a single digit) As @J.L. points out, it must be 4

Answer 5

4