Question Details

In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.


18225, 6075, 2025, 675, 220, 75, 25

Options

A

25

B

75

C

220

D

18225

E

6075

Show Answer

Correct Answer :

Option C

220

Solution :

The correct option is 220.

Let us analyze the pattern followed by the numbers in the given series from left to right:

18225÷3=6075

6075÷3=2025

2025÷3=675

675÷3=225

225÷3=75

75÷3=25


Each successive number in the series is obtained by dividing the previous number by 3.
Following this rule, after 675, the next term should be 225 instead of 220.

Therefore, 220 is the wrong number in the series.

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