Exams › IBPS PO › Quantitative Aptitude

Find the approximate value of the question mark (?) in the following equation: ? + 205.901 - 506.109 = (7.01)^3 - 50.01% of 85.99

1. 500
2. 600
3. 550
4. 510

Correct answer: 600

Solution

Approximate $(7.01)^3 \approx 7^3=343$ and $50.01\%$ of $85.99 \approx 50\%$ of $86=43$. So RHS $\approx 343-43=300$. On the left, $205.901-506.109\approx -300$, hence ? $\approx 600$.

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