The HCF and the LCM of 12, 21, 15 respectively are:... | MCQ 1m | Maths | SuperPadhai

Real Numbers > Question

MCQ1 markYear: 2020EasyCBSE Class 10

real-numbersHCFLCM

Question

The HCF and the LCM of

12

,

21

,

15

respectively are:

Solution

1

12 = 2^{2} \times 3

,

21 = 3 \times 7

,

15 = 3 \times 5

.
HCF

= 3

, LCM

= 2^{2} \times 3 \times 5 \times 7 = 420

+1 mark

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