Quantitative Aptitude Ques 2217

Question: Directions: What will come in the place of question mark (?) in the following questions. [IBPS (Clerk) Pre 2015]

$ (0.4\times 450)\div 4=5\times {3^{?}} $

Options:

A) $ 3 $

B) $ 1 $

C) $ 2 $

D) $ -3 $

E) $ -2 $

Show Answer

Answer:

Correct Answer: C

Solution:

  • $ (0.4\times 450)\div 4=5\times {3^{?}} $
    $ \Rightarrow $ $ \frac{180}{4}=5\times {3^{?}} $

$ \Rightarrow $ $ 9={3^{?}} $
$ \Rightarrow $ $ {3^{?}}=3^{2} $
$ \Rightarrow $ $ ?=2 $