# What is the largest digit that can be placed in the blank to make 53_21 divisible by 9?

2
by nestorh

Log in to add a comment

by nestorh

Log in to add a comment

The answer is 7 since 53**7**21 divided by 9 is equal to 5969.

The number is divisible by 9 if the sum of the digits of the number is divisible by 9.

5 + 3 + 2 + 1 = 11

18 is divisible by 9, to find blank, simply subtract the numbers:

18 - 11 = 7

Check:

53721 ÷ 9 = 5969

Therefore, the answer to your question is