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What is the smallest co-prime number?

66. What is the smallest co-prime number?

1. 0
2. 1
3. 2
4. 3

Answer

The correct answer is: B) 1

Explanation

If two integers have the same greatest common divisor (GCD), they are said to be co-prime (or substantially prime). The number 1 is co-prime with any other positive integer because its only positive divisor is 1, and it has no other common divisors with other positive integers.