Quantitative Aptitude Ques 2214

Question: Directions: In these questions, a number series is given. Only one number is wrong which does not fit in the series. Find out the wrong number. [RBI (Assistant) Grade B 2015]

5040, 720, 120, 24, 6, 3, 1

Options:

A) 3

B) 6

C) 120

D) 720

E) 24

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ 5040\div 7=720 $ $ 720\div 6=120 $
    $ \Rightarrow $ $ 120\div 5=24 $ $ 24\div 4=6 $
    $ \Rightarrow $ $ 6\div 3=[2] $
    $ \Rightarrow $ $ 2\div 2=1 $

$ \therefore $ Wrong number $ =3 $

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