Some is, some ain't. sqrt 2 is irrational but sqrt 4 is 2...
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Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
No because the square root of 2 is an irrational number that can't be expressed as a fraction.
The negative square root of 49 is -7. -7 is whole, integer, and rational number. It's not a natural or irrational number.
It is a irrational number. Because the square root of every imperfect square is irrational number.
the square root of 26 is a irrational number