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  • Which of the following pairs are co-prime?(a) 11, 27(b) 14, 63(c) 18, 27(d) 21, 84

Which of the following pairs are co-prime?(a) 11, 27(b) 14, 63(c) 18, 27(d) 21, 84

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A prime number is defined as a number that has no factor other than 1 and itself.

and

The co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their highest common factor (HCF) will be 1.

So let's solve the question option wise

Option A: ( 11, 27) Factor that divides both of them is 1

Option B: (14, 63) Factors that divides both oh them are 1,7.

Option C:  (18, 27) Factors that divide both of them are 1,3

Option C: (21, 84) Factors that divide both oh them are 1,21

So  (11, 27) are co-prime numbers.

Posted by

avinash.dongre

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