Which of the following is an integer?

Which of the following is an integer?

Detailed Explanation

An integer is any positive or negative whole number or zero. Therefore, -9 is an integer.

\( \frac{\mathrm{3} }{\mathrm{4} } \) and 0.5 are not integers because they are not whole numbers.

The square root of 42 is approximately 6.48 and therefore not an integer.

\( \frac{\mathrm{3} }{\mathrm{4} } \) and 0.5 are not integers because they are not whole numbers.

The square root of 42 is approximately 6.48 and therefore not an integer.