The possible one's digits of the square root of 9801 is
1) 2 or 4
2) 1 or 9
State whether it is 1 or 2

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Solution

Answer: 2
Explanation: Since 1² and 9² give 1 at unit’s place, so these are the possible values of unit digit of the square root.

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Question 72

State whether the following statement is true or false:

The square root of a perfect square of n digits will have $(\frac{n + 1}{2})$ digits, if n is odd.

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Question 1 (i)
What could be the possible ‘one’s’ digit of the square root of following number:
9801

9801

(a + \frac{1}{5 a})

a^{2} + 1 + \frac{1}{4 a^{2}}

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