Question

what number is needed to make 23_2 divisible by 9?

Answer 1

Answer:

2322 is needed to make the number divisible by 9....

Step-by-step explanation:

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Answer 2

Answer:

So, 2 is the number that needed to make the given number divisible by 9.

To find:

The number is needed to make 23_2 divisible by 9

Solution:

By thumb rule, the numbers to be divisible by 9, their sum should be equal to 9.

Consider 9, 18, 27, 36, 45 ….. their sum is equal to 9

23_2 = 2 + 3 + 2 = 7

To make the number to be divisible by 9,  

7 + x = 9

x = 2

2322 is the number to be divisible by 9.

Result:

So, 2 is the number that needed to make the given number divisible by 9.