Quantitative Aptitude Ques 951

Question: Directions: What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value.)

$ {{(41.33)}^{2}}+{{(7.96)}^{2}}-{{(22.02)}^{2}}=? $

Options:

A) 1280

B) 1440

C) 1580

D) 1540

E) 1380

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ {{(41.33)}^{2}}+{{(7.96)}^{2}}-{{(22.02)}^{2}}=? $

$ \Rightarrow $ $ ?\approx {{(41)}^{2}}+{{(8)}^{2}}-{{(22)}^{2}} $

$ \Rightarrow $ $ ?\approx 1681+64-484 $

$ \Rightarrow $ $ ?\approx 1261\approx 1280 $

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