Aptitude | Series | Question 10

Find wrong number in series:
8, 24, 12, 36, 18, 54, 28

(A)

12

(B)

24

(C)

18

(D)

28

Answer: (D)

Explanation:

mixture of two alternate series:
8*3=24
24/2=12
12*3=36
36/2=18
18*3=54
54/2=27

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