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Question
___ is a pair of co-prime numbers.
___ is a pair of co-prime numbers.
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Solution
The correct option is B 7, 15
If any two numbers Highest Common Factor is 1, then they are called co-prime to each other.
HCF of 12 and 15 is 3
HCF of 7 and 15 is 1
HCF of 22 and 48 is 2
HCF of 24 and 36 is 12
Therefore 7, 15 is a pair of co-prime numbers since they have an HCF of 1.
If any two numbers Highest Common Factor is 1, then they are called co-prime to each other.
HCF of 12 and 15 is 3
HCF of 7 and 15 is 1
HCF of 22 and 48 is 2
HCF of 24 and 36 is 12
Therefore 7, 15 is a pair of co-prime numbers since they have an HCF of 1.
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(C) 
(D) 