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Is 1.21 a rational number

Updated: 4/28/2022
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13y ago

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The number 1.21 is rational because it can be expressed as a fraction p/q where p and q are both integers.

1.21 = 121/100. Thus, it is rational.

In general, any number which can be expressed as a fraction, or a decimal which terminates (like 1.21) or repeats (like 1/3 = 0.3333...) is rational. All other real numbers are irrational.

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13y ago
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Q: Is 1.21 a rational number
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