Question

ii)Which of the following pair is co-prime?

a) 6,8
b)2,5
c) 5,10
d) none of these
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Answer 1

Answer:

2,5

Step-by-step explanation:

Answer 2

Answer:

For option (b), 18 and 25: The factors of 18 are 1, 2, 3, 6 and 9 and the factors of 25 are 1 and 5. Here 18 and 25 have only one common factor that is 1. Hence, their HCF is 1 and they are co-prime.