Which of the following is a pair of co-primes?Options :A] (16, 62)B] (18, 24)C] (20, 27)D] (23, 92)
Question
Which of the following is a pair of co-primes?Options :A] (16, 62)B] (18, 24)C] (20, 27)D] (23, 92)
Solution
The pair of co-primes is the one where the greatest common divisor (GCD) is 1.
Let's check each option:
A] (16, 62): The GCD of 16 and 62 is 2, so they are not co-primes.
B] (18, 24): The GCD of 18 and 24 is 6, so they are not co-primes.
C] (20, 27): The GCD of 20 and 27 is 1, so they are co-primes.
D] (23, 92): The GCD of 23 and 92 is 23, so they are not co-primes.
So, the pair of co-primes is (20, 27).
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