Question

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3. Which statement is true? .
The only factors of 4 are 4 andy
The only factors of 7 are 7 and 11
& © The only factors of 16 are 16 and 1.
© The only factors of 32 are 32 and 1.

Answer 1

The only factors of 7 are 7 and 1

Explanation:

It appears as though you're practicing identifying prime numbers.

The factors of 4 are 1, 2, and 4.

The factors of 16 are 1, 2, 4, 8, and 16.

The factors of 32 are 1, 2, 4, 8, 16, and 32.

The only factors of 7 are 7 and 1. So, 7 is a prime number.

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You may notice that the perfect squares 4 and 16 each have an odd number of factors. The middle one in the list is the square root. Other composite numbers have an even number of factors.