Question

hcf and lcm of 21 49 84

Answer 1

Hcf=7

Lcm=588

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Answer 2

Answer:

HCF and LCM of 21, 49, 84 is 7 and 588.

Step-by-step explanation:

HCF stands for Highest Common Factor,

⇒ 21 = 3 × 7

⇒ 49 = 7 × 7

⇒ 84 = 2 × 2 × 3 × 4 × 7

∴ HCF ( Highest Common Factor ) of 21, 49, 84 is 7.

LCM stands for Lowest Common Multiple,

LCM of 21, 49, 84 is

⇒ 3 × 7 × 7 × 4

⇒ 588.

∴ LCM ( Lowest Common Multiple ) of 21, 49, 84 is 588.

∴ The HCF ( Highest Common Factor ) and LCM ( Lowest Common Multiple ) of the given numbers 21, 49, 84 is 7 and 588.