**Download NCERT Solutions for Class 8 Maths Chapter 16 Exercise 16.2 – Playing with Numbers. This Exercise contains 4 questions, for which detailed answers have been provided in this note. In case you are looking at studying the remaining Exercise for Class 8 for Maths NCERT solutions for Chapter 16 or other Chapters, you can click the link at the end of this Note.**

### NCERT Solutions for Class 8 Maths Chapter 16 Exercise 16.2 – Playing with Numbers

**NCERT Solutions for Class 8 Maths Chapter 16 Exercise 16.2 – Playing with Numbers**

**1. If 21 y5 is a multiple of 9, where y is a digit, what is the value of y?**

** Sol.:** – For a number to be a multiple of 9, the sum of digit of the number should be divisible by 9.

So, sum of digit of 21y5 = 2 + 1 + y + 5 = (8 + y)

So, to make (8 + y) divisible by 9, we must put y = 1 (since y is a single digit number)

So,

**y = 1**will make 21y5 a multiple of 9.

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