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Arithmetic Ability
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Q.
Find out the wrong number in the following series: 5, 15, 30, 80, 180, 540, 1080
A.
540
B.
180
C.
30
D.
80
View Answer
Correct choice: A
Explanation:
There should be 90 instead of 80 so we can have a series 5, 5x3, 15x2, 30x3, 90x2, 180x3, 540x2 and 1080x3 and so on…
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