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Q.

The largest number of 5 digits, which is perfect square is:


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a

99999

b

99764

c

99976

d

99856 

answer is D.

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Detailed Solution

Given a largest 5-digit number.
The largest number of 5 digits =99999.
99999 is not a perfect square.
Subtract 143 from 999 to get 99856 which is a perfect square of 99856.
Required number =99999-143=3162
Required number =99856
Therefore, option (4) is correct.
 
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