If (41)^2 is added to the square of a number, the answer so obtained is 7457. What is the number ? (a) 76 (b) 63 (c) 81 (d) 82 (e) None of these
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Answer:76
Step-by-step explanation:let the square no. be 'x'.
Therefore, (41)^2 + x^2=7457
x^2 = 7457 - (41)^2
x^2 = 7457 - 1681
x= root of 5776
i.e., 76
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