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Which least number must be subtracted to $1025$ to make a perfect square?

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1

2

3

4

answer is A.

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Detailed Solution

Given number is 1025.
Calculating the square root using the division method.
Question Image

Here, the remainder is 1.
It represents that the square of

32

is less than

1025

1

.
Therefore, a perfect square will be obtained by subtracting

1

from the given number

1025

.
So, perfect square

= 1025 - 1 = 1024

.
Therefore, option (1) is correct.

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