Which of the following is a pair of co-primes?
(a) (14,35) (b)(18,25) (c) (31,93) (d) (32,62)
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Answer:
18 and 25 are corimes
option (b) is correct
Step-by-step explanation:
(a)
14=2*7
35=5*7
14 and 35 have a common factor.
They are not co primes
(b)
18=2*3*3
25=5*5
18 and 25 have no common factor.
They are co primes
(c)
31=1*31
93=31*3
31 and 93 have a common factor
They are not co primes
(d)
32=2*2*2*2*2
62=2*31
32 and 62 have a common factor
They are not co primes.
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