It can be written as a fraction, so it is rational.
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No. If you can write the number on paper, it's rational. 68 is the ratio of 68 to 1.
Irrational.
The product of a rational and irrational number can be rational if the rational is 0. Otherwise it is always irrational.
It will be irrational.
No.A rational times an irrational is never rational. It is always irrational.