Rational numbers are numbers that can be expressed as the quotient of two integers (i.e., a fraction) where the denominator is not zero. Let's evaluate each of the given numbers:
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√72 - This is not a rational number because it cannot be expressed as a fraction of two integers. Its decimal representation is approximately 8.49 (a non-repeating, non-terminating decimal).
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11/23 - This is a rational number because it is expressed as a fraction of two integers.
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√14 - This is not a rational number because it cannot be expressed as a fraction of two integers. Its decimal representation is approximately 3.74 (a non-repeating, non-terminating decimal).
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√36 - This is a rational number because it equals 6, which can be expressed as 6/1 (an integer divided by an integer).
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2.7 - This is a rational number because it can be expressed as 27/10 (a fraction).
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π - This is not a rational number; it is an irrational number as it cannot be expressed as a fraction of two integers.
The three numbers that are rational from the list are:
- 11/23
- √36
- 2.7