Question

which of the following is a pair of coprimes?
options:1)(4,8) 2)(5,10) 3)(8,15) 4)(6 12)​

Answer 1

Answer:

Factors of 14=1,2,7

 Factors of 35=1,5,7

⇒ Common factor =1,7

∴  (14,35) is not pair of co-prime.

Factors of 18=1,2,3,6,9

Factors of 25=1,5

⇒ Common factor =1

∴  (18,25) is pair of co-prime.

Factors of 31=1,31

Factors of 93=1,3,31

⇒ Common factor =1,31

∴  (31,93) is not pair of co-prime.

Factors of 32=1,2,4,8,16

 Factors of 62=1,2,31

⇒ Common factor =1,2

∴  (32,62) is not pair of co-prime

Answer 2

Answer:

(8, 15)

Because they are only divided by one...

Step-by-step explanation:

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