which of the two pairs is coprime
(a) (16,21)
(b) (15,18)
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Answer:
(a) (16,21)
Step-by-step explanation:
What is coprime ?
If HCF of two numbers is 1, then the two numbers are called relatively prime or co prime .
(16,21) :
16 = 2×2×2×2
21 = 3×7
No common factor other than 1 it satisfies the condition . So the required pair of coprime is (16,21) .
Hope this helps you ✌️
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