Question

HCF of 21 and 91 will be ........​

Answer 1

Answer:

the answer will be 7

first we divide 91 from 21 then the quotient will 4 and remainder will be 7 the we divide 21 from 7

Answer 2

HCF of 21 and 91 is 7

Given :

The numbers 21 and 91

To find :

HCF of 21 and 91

Concept :

HCF :

For the given two or more numbers HCF is the greatest number that divides each of the numbers

Solution :

Step 1 of 2 :

Write down the given numbers

The given numbers are 21 and 91

Step 2 of 2 :

Prime factorise the given numbers

21 = 3 × 7

91 = 7 × 13

Step 3 of 3 :

Find HCF of 21 and 91

We know that for the given two or more numbers HCF is the greatest number that divides each of the numbers

Hence the required HCF = 7

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