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12.67 is rational.

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rational

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Rational

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Rational

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Yes

Q: Is 12.67 rational or irrational

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is 34.54 and irrational or rational. number

RATIONAL , because you can convert it to a RATION (FRACTION). Method Let P = 0.272727.... Then 100P = 27.272727.... Subtract 99P = 27 (Note the decimals to infinity subtract to zero. P = 27/99 Cancel down by '9' P = 3/11 ( Which is a RATIO/rational). Since both '3' & '11' are prime numbers this will not cancel down any further. Hence 3/11 = 0.272727....

Rational

Rational.

No

If x is rational the it is rational. If x is irrational then it is irrational.

Rational. Rational. Rational. Rational.

rational

No. A rational plus an irrational is always an irrational.