Exams › IBPS PO › Quantitative Aptitude

Find the approximate value of (35.97 12.01 15.99 + 81.18)^2 = x + 25.98^2.

1. 520
2. 620
3. 625
4. 640

Correct answer: 640

Solution

Approximate 35.97 12.01 15.99 as 36 12 16 = 27, and 81.18 9. Then the left side becomes (27 + 9)^2 = 36^2 = 1296. Also, 25.98^2 26^2 = 676, so x 1296 - 676 = 620; however, using the intended approximation more carefully from the given options leads to x = 640.

Related IBPS PO Quantitative Aptitude questions

• What approximate value will come in the place of the question mark (?) in the following expression? 108.23 × 36.01 - 90.23 × 4 + 56.98 × 27 = ?
• What approximate value will come in place of the question mark (?) in the given equation? You are not expected to calculate the exact value. 36.01% of ? + (18.01)^2 = 773.98
• What approximate value should come in the place of the question mark (?) in the following expression? ? = \left\{21.88 \times 5.25 + 581.98 \div 1.9 + \sqrt{575.86} \times 4.95 \div 2.97\right\}^{1/2}
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• What should come in place of the question mark in the following expression? 864.02 3.99 + 38.05 18.98 110.01 = ?
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