Mathematics, 02.10.2019 18:30, bks53

Which statement is true about the product of a non-zero rational number and an irrational number?
a) the product of a non-zero rational number and an irrational number is always a rational number.
b) the product of a non-zero rational number and an irrational number is never an irrational number.
c) the product of a non-zero rational number and an irrational number is sometimes a rational number.
d) the product of a non-zero rational number and an irrational number is always an irrational number.

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Which statement is true about the product of a non-zero rational number and an irrational number?

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