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Click the pair of numbers that is relatively prime.

A. 4 and 22
B. 7 and 126
C. 21 and 35
D. 25 and 27

2 Answers

1 vote

Answer:

The answer is 25 and 27

Explanation:

Numbers that are relatively prime only have one as a common factor.

The numbers four and twenty-two have two as a common factor, so they are not relatively prime.

The numbers seven and one hundred twenty-six have seven as a common factor, so they are not relatively prime.

The numbers twenty-one and thirty-five also have seven as a common factor, so twenty-one and thirty-five are not relatively prime.

The factors of twenty-five are one, five, and twenty-five; and the factors of twenty-seven are one, three, nine, and twenty-seven. These two numbers share no common factor other than one.

So twenty-five and twenty-seven are relatively prime.

User BlueFeet
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5.3k points
1 vote
I believe the answer is D. 25 and 27

Hope this helps :)
User Menzo Wijmenga
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