Exams › SSC CGL (Prelims) › General

When the square of a positive number is subtracted from 2531 and the result is divided by 11, the quotient is 221. What is the number?

1. 12
2. 9
3. 11
4. 10

Correct answer: 10

Solution

Let the number be \(x\). Then \(\frac{2531-x^2}{11}=221\). So \(2531-x^2=2431\), giving \(x^2=100\). Since the number is positive, \(x=10\).

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