Quantitative Aptitude Ques 2084

Question: Directions: What will come in place of question mark in the given questions? [IBPS (Clerk) Pre2015]

$ 8^{2}\times 7^{2}\div \sqrt{196}-143={3^{?}} $

Options:

A) 5

B) 6

C) 3

D) 4

E) 2

Show Answer

Answer:

Correct Answer: D

Solution:

  • $ 8^{2}\times 7^{2}\div \sqrt{196}-143={3^{?}} $

$ \Rightarrow $ $ 8^{2}\times 7^{2}\div 14-143={3^{?}} $

$ \Rightarrow $ $ 64\times \frac{49}{14}-143={3^{?}} $

$ \Rightarrow $ $ 244-143={3^{?}} $

$ \Rightarrow $ $ {3^{?}}=81 $
$ \Rightarrow $ $ {3^{?}}=3^{4} $

$ \Rightarrow $ $ ?=4 $

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