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Earn +20 ptsQ: Is the ratio 21 an integer or an irrational number?
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Continue Learning about Math & Arithmetic
Is the square root of 5 and squa re root of 21 irrational?
Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
Is the square root of 21 an irrational or a rational number?
irrational
Is 21 a square number itself?
No, 21 is not a square number. A square number is the result of multiplying an integer by itself, and 21 cannot be expressed as the square of an integer.
Is 21 a square number?
21 is not the square of an integer. The closest square number is 25.
Is the square root of 21 a real number?
Yes, albeit an irrational number
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