Mathematics
Grade-8
Easy
Question
All square roots are irrational except
- Lovely squares
- Perfect squares
- Natural squares
- Neat squares
Hint:
Perfect square of a number 'x' is such that x * x = perfect square of x.
The correct answer is: Perfect squares
TO FIND-
Which square roots are rational?
SOLUTION-
We know that perfect square of a number is obtained by multiplying the number by itself.
i.e. x * x = x2, where x2 is the perfect square and its square root is x, which is a rational number.
Hence, the square roots of perfect squares are rational numbers.
FINAL ANSWER-
Option 'c' i.e. 'Perfect squares' is the correct answer to the given question.
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