Question

Q.5. The HCF and the LCM of 12,21,15 respectively are:
a) 3, 140
b) 12, 420
c) 3, 420
d) 420, 3
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Answer 1

Answer:

C)3,420

Step-by-step explanation:

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Answer 2

The correct option is (c) 3, 420 12 = 2 × 2 × 3

21 = 3 × 7

15 = 5 × 3

HCF = 3

L.C.M = 2 × 2 × 3 × 5 × 7 = 420

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