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Chapter 3 Playing With Numbers Ex 3.7 Solutions

Question - 11 : -
Find the LCM of the following numbers in which one number is the factor of the other.

(a) 5, 20 (b) 6, 18 (c) 12, 48 (d) 9, 45

What do you observe in the results obtained?

Answer - 11 : -

(a) 5, 20

LCM = 2 × 2 × 5 = 20

(b) 6, 18

LCM = 2 × 3 × 3 = 18

(c) 12, 48

LCM = 2 × 2 × 2 × 2 × 3 = 48

(d) 9, 45

LCM = 3 × 3 × 5 = 45

∴ Hence,in each case the LCM of given numbers is the larger number. When a number is afactor of other number then their LCM will be the larger number.

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