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What least number must be subtracted from 7250 to get a perfect square? Also, find the square root of this perfect square.
- A95
- B85
- C75
- D65
Correct answer: B
Discussion 1
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0
CCommunity
85
Let us try to find the square root of 7250.
This shows that (85)² is less than 7250 by 25.
So, the least number to be subtracted from 7250 is 25.
Required perfect square number = (7250 - 25) = 7225
And, √7225 = 85.
Let us try to find the square root of 7250.
This shows that (85)² is less than 7250 by 25.
So, the least number to be subtracted from 7250 is 25.
Required perfect square number = (7250 - 25) = 7225
And, √7225 = 85.