top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

Guess the next number in the following Series?

+3 votes
190 views

Series: 2, 15, 13, 12, 12, 11, 11, ?
Guess the ?

posted Jan 7, 2014 by Amit Mishra

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

Heading ##Total count is even. Missing number (?) is 8th which can be calculated by using logic:

Subtract the middle one's, then their neighbour digits. So, the missing number be:
case1:
12-12 = 0
13-11= 2
15-11= 4
2- (?) = 6

case2:
12-12= 0
11-13= -2
11-15= -4
(?)- 2 = -6

which comes -4 in both the cases.

so, the final series is: 2, 15, 13, 12, 12, 11, 11, -4

answer Feb 6, 2014 by Gurpreet Singh Matharoo
Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...