Mathematics

Mathematics, 11.10.2019 00:30, graymonky12

Plz !
which statement is not always true?

a the sum of a rational number and an irrational number is irrational.
b the sum of two rational numbers is rational.
c the product of two irrational numbers is irrational.
d the product of two rational numbers is rational.

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Plz !
which statement is not always true?

a the sum of a rational number and an...

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