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Earn +20 ptsQ: Is 2 over 4 an irrational or a rational number?
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Is 9 over 2 a rational or irrational number?
Rational
Is pi over 2 a whole integer rational or irrational number?
If you multiply or divide an irrational number - such as pi - by ANY rational number (except zero), you will ALWAYS get an irrational number.
Is the square of an irrational number rational?
Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.
Is .22222222.a rational or irrational number?
If it ends there, it is rational. If it continues with the same digit (2 in this case) over and over, it is also rational.
Is an irrational number divided by an irrational number always a rational?
No. sqrt(2)/pi is not rational.
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