Question

Find the HCF OF 12.15 and 21 using the prime factorisaton method ​

Answer 1

Answer:

The hcf will be 3.

Step-by-step explanation:

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Answer 2

$hey \: mate \: your \: answer$

$Given \: numbers \: are 12, 15 \: and \: 21$

$Factorization \:  of 12, 15 \: and \: 21.$

$Here, 31 is \: t he \: smallest \: power \: of$

$the common \: factor 3.$

$So, HCF (12, 15, 21) = 3.$

2² × 3¹ × 5¹ × 7¹ are the greatest powers of the prime factors 2, 3, 5 and 7 respectively involved in the given three numbers .

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