Q: Is a rational number cubed always rational?

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-27 is one possible answer.

As much as, in these days of uncertainty, anything can be anything. As long as the constraints of a rational number are kept to, a rational number will always remain a rational number.

No.A rational times an irrational is never rational. It is always irrational.

The product of two rational numbers is always a rational number.

It is always rational.

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No because 3 cubed is 27 which is a rational number

8

A natural number is always a rational number .

-27 is one possible answer.

As much as, in these days of uncertainty, anything can be anything. As long as the constraints of a rational number are kept to, a rational number will always remain a rational number.

No.A rational times an irrational is never rational. It is always irrational.

Usually, but not always. 1 cubed is 1. Cubed fractions are smaller.

Yes, it is.

Yes, the sum is always rational.

The product of an irrational number and a rational number, both nonzero, is always irrational

The product of two rational numbers is always a rational number.

No, and I can prove it: -- The product of two rational numbers is always a rational number. -- If the two numbers happen to be the same number, then it's the square root of their product. -- Remember ... the product of two rational numbers is always a rational number. -- So the square of a rational number is always a rational number. -- So the square root of an irrational number can't be a rational number (because its square would be rational etc.).