Question

which of the following is co-prime.
a) 12,10 b) 30,40 C) 5,9
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Answer 1

Answer:

5,9 is co-prime and is the answer of the question

Answer 2

Answer:

C) 5 & 9 are the co-prime.All pairs of two consecutive numbers are co-prime numbers.  

Hope it helps !!!

Step-by-step explanation: