Quantitative Aptitude Ques 656

Question: Directions: What will come in place of question mark (?) in the following questions?

$ 78\times 5\div 2-26={{?}^{2}} $

Options:

A) $ \sqrt{13} $

B) $ 26 $

C) $ \sqrt{26} $

D) $ {{(13)}^{2}} $

E) $ 13 $

Show Answer

Answer:

Correct Answer: E

Solution:

  • $ 78\times 5\div 2-26={{?}^{2}} $

$ \Rightarrow $ $ \frac{78\times 5}{2}-26={{?}^{2}} $

$ \Rightarrow $ $ 39\times 5-26={{?}^{2}} $

$ \Rightarrow $ $ 195-26={{?}^{2}} $

$ \Rightarrow $ $ 169={{?}^{2}} $

$ \Rightarrow $ $ ?=13 $

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