Find first three common multiples of:
(a) 6 and 8
(b) 12 and 18

Solution:

We will be using the concept of multiples to solve this.

(a) Given numbers are 6 and 8. 

The first few multiples of 6 are: 6, 12 ,18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78....

Similarly, the multiples of 8 are: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80.....

Hence, the first three common multiples of 6 and 8 are 24, 48 and 72.

(b) Given numbers are 12 and 18.

The first few multiples of 12 are: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120..... 

Similarly, the multiples of 18 are: 18, 36, 54, 72, 90, 108, 126.....

Hence, the first three common multiples of 12 and 18 are 36, 72 and108.

NCERT Solutions for Class 6 Maths Chapter 3 Exercise 3.4 Question 3

Find first three common multiples of (a) 6 and 8 (b) 12 and 18

Summary:

(a) The first three common multiples of 6 and 8 are 24, 48 and 72. (b) The first three common multiples of 12 and 18 are 36, 72 and 108.

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