Maths / Playing With Numbers / Factors

QUESTION
 

Choose the co-prime numbers from the following pairs.

OPTIONS
A. 

7 and 63

B. 

36 and 25

C. 

35 and 21

D. 

63 and 81

Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

36 and 25 share only one factor i.e. 1

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