Quantitative Aptitude Ques 2131

Question: Directions: What should come at the place of question mark (?) in the following questions? [IBPS (PO/MT) 2015]

$ 421\div 35\times 299.97\div 25.05={{?}^{2}} $

Options:

A) 22

B) 24

C) 28

D) 12

E) 18

Show Answer

Answer:

Correct Answer: D

Solution:

  • $ 421\div 35\times 299.97\div 25.05={{(?)}^{2}} $ $ \approx 420\div 35\times 300\div 25={{(?)}^{2}} $ $ \approx 420\times \frac{1}{35}\times 300\times \frac{1}{25}=\frac{420}{35}\times \frac{300}{25} $ $ =12\times 12={{(?)}^{2}} $
    $ \Rightarrow $ $ {{(12)}^{2}}={{(?)}^{2}} $ $ ?=12 $
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