Lessons

General Aptitude
18.4 Odd Man Out and Series - Find Wrong No.

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Q.

Find out the wrong number in the series.
190, 166, 145, 128, 112, 100, 91

View Answer

Correct choice: D

Explanation:

Go on subtracting 24, 21, 18, 15, 12, 9 from the numbers to get the next number.

190 - 24 = 166
166 - 21 = 145
145 - 18 = 127 [Here, 128 is placed instead of 127]
127 - 15 = 112
112 - 12 = 100 ... and so on.

Therefore, 128 is wrong.

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