Aptitude - Odd Man Out and Series - Discussion
Discussion Forum : Odd Man Out and Series - Missing No. (Q.No. 1)
Directions to Solve
Insert the missing number.
1.
16, 33, 65, 131, 261, (....)
Answer: Option
Explanation:
Each number is twice the preceding one with 1 added or subtracted alternatively.
So, the next number is (2 x 261 + 1) = 523.
Discussion:
12 comments Page 2 of 2.
Pooja said:
1 decade ago
Here
16*2+1=33
2*33-1+65
2*65+1=131
2*131-1=261
2*261+1=523
16*2+1=33
2*33-1+65
2*65+1=131
2*131-1=261
2*261+1=523
123 said:
9 years ago
Yes, 523 is the correct answer.
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