Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Find Wrong No. (Q.No. 15)
Directions to Solve
Find out the wrong number in the series.
15.
3, 7, 15, 27, 63, 127, 255
Answer: Option
Explanation:
Go on multiplying the number by 2 and adding 1 to it to get the next number.
So, 27 is wrong.
Discussion:
12 comments Page 2 of 2.
Minu said:
6 years ago
3+4 = 7
7+8 = 15
15+12 = 27
27+16 = 43
7+8 = 15
15+12 = 27
27+16 = 43
(2)
Sivaji Pulluru said:
5 years ago
3*2 = 6 + 1 = 7
7*2 = 14 + 1 = 15
15*2 = 30 + 1 = 31
31*2 = 62 + 1 = 63.
7*2 = 14 + 1 = 15
15*2 = 30 + 1 = 31
31*2 = 62 + 1 = 63.
(1)
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