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Q.

The HCF of 36, 27 and 80 is _______.

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a

1

b

2

c

3

d

5

answer is C.

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Detailed Solution

Let us write each number as a product of its prime factors.:

2²x 3² = 36

3³= 27

2⁴ x 5 = 80

The product of all common prime factors is the HCF.

The common prime factors in this example are none.

So, HCF is 1.

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