Quantitative Aptitude Ques 1223

Question: Directions: In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number. [SBI (PO) 2011]

3601, 3602, 1803, 604, 154,36,12

Options:

A) 3602

B) 1803

C) 604

D) 154

E) 36

Show Answer

Answer:

Correct Answer: D

Solution:

  • $ [3601+{{(1)}^{2}}]\times 1=3602 $

$ \Rightarrow $ $ [3602+{{(2)}^{2}}\times \frac{1}{2}=1803 $
$ \Rightarrow $ $ [1803+{{(3)}^{2}}\times \frac{1}{3}=604 $

$ \Rightarrow $ $ [604+{{(4)}^{2}}+\frac{1}{4}=155\ne 154 $

$ \Rightarrow $ $ [155+{{(5)}^{2}}]\times \frac{1}{5}=36 $
$ \Rightarrow $ $ [36+{{(6)}^{2}}\times \frac{1}{6}=12 $