Question

largest 4 digit no which would be a perfect square​

Answer 1

Step-by-step explanation:

104104 (10 00010 000) is the smallest five digit number and a perfect square, its root is 102102 (100100), do the higest 44 perfect square is the square from one less (9999).

992=9 801992=9 801

General the highest nn digit perfect square is (10a−1)2=102a−2×10a+1=9.9…9a−1 9s8×10n−1+1(10a−1)2=102a−2×10a+1=9.9…9⏟a−1 9s8×10n−1+1 if n=2an=2a (nn is even) and ⌊10b10−−√⌉2⌊10b10⌉2 when n=2b+1n=2b+1 (nn is odd).

Answer 2

Answer:

It is

9801

Step-by-step explanation:

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