If 72*72 is divisible by 9, the missing * digit will be:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 0 or 9.
Sum of the digits = 7 + 2 + * + 7 + 2 = (18 + *) must be divisible by 9
If * = 0 then, 18 + * = 18 divisible by 9
If * = 9 then, 18 + 9 = 27 divisible by 9
Hence, the required value is 0 or 9.