Question

Which of the following is a pair of co-prime?
20,25
17,35
15,63
28, 34​

Answer 1

Answer:

20,25

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Answer 2

Answer:

for example : 16 and 25 does not has same common factor then it is known as co-prime

20 ,25 has same common factor then it is not a co-prime

17 ,35 has it is a coprime

15 ,63 it has same common factor then it is not a co-prime

28 ,34 it also has same common factor it is not a coprime