Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Find Wrong No. (Q.No. 7)
Directions to Solve
Find out the wrong number in the series.
7.
1, 3, 10, 21, 64, 129, 356, 777
Answer: Option
Explanation:
A x 2 + 1, B x 3 + 1, C x 2 + 1, D x 3 + 1 and so on.
So, 356 is wrong.
Discussion:
11 comments Page 2 of 2.
Riya said:
1 year ago
In the above solution, where we are separating as odd and even numbers, the difference between the last two odd numbers I.e., 777 and 129 is 648.
Also, 648/6 = 108 whereas 9 is not completely by 6.
Also, 648/6 = 108 whereas 9 is not completely by 6.
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