If two numbers are co-primes, at least one of them must be prime.

True, True, False

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False, False, True

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Solution

The correct option is B False
Co-Prime numbers are those numbers whose common factor is only one ie. $1$ .

Now, $9$ and $4$ are co-prime numbers as the only common factor between them is $1$ but none of them are prime. Hence, the given statement is false.

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State true of false:

If two numbers are co-primes at least one of them must be prime.

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II) The product of two perfect squares is a perfect square. (True/False)
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If two numbers are co-primes, at least one of them must be prime.

The correct option is B FalseCo-Prime numbers are those numbers whose common factor is only one ie. 1. Now, 9 and 4 are co-prime numbers as the only common factor between them is 1 but none of them are prime. Hence, the given statement is false.

The correct option is B False
Co-Prime numbers are those numbers whose common factor is only one ie. $1$ .

Now, $9$ and $4$ are co-prime numbers as the only common factor between them is $1$ but none of them are prime. Hence, the given statement is false.