Exams › IBPS PO › Quantitative Aptitude

In the following questions, two equations (I) and (II) are given. Solve both equations and answer the following question. I. \(x^2 = 81\) II. \((2y + 3)^2 = 49\)

1. x<y
2. x>y
3. x≤y
4. x=y or no relation between x & y

Correct answer: x=y or no relation between x & y

Solution

From \(x^2=81\), \(x=\pm 9\). From \((2y+3)^2=49\), \(2y+3=\pm 7\), so \(y=2\) or \(y=-5\). Since x can be greater than, less than, or equal to y depending on the values chosen, there is no fixed relation.

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