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The square root of an odd number:

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need not be odd

is odd

is even

cannot be determined

answer is B.

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Detailed Solution

We need to find the nature of the square root of an odd number.
Consider the following examples:

\sqrt[2]{25} = 5

Square root of odd number,

25

is a odd number

5

\sqrt[2]{49} = 7

Square root of odd number,

49

is a odd number

7

.
Hence, we can say that the square root of odd number is odd.
Therefore, option (2) is correct.

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