Aptitude - missing number

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Aptitude | Question 35 of 42

missing number

What is the missing number in this series? 8 2
14 6 11? 14 6 18 12

Total Answers and Comments: 7

Last Update: November 11, 2009 Asked by: neepabiswas

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Submitted by: rkpadki

Hi,

I came up with another thought...

the numbers are 8,2,14,6,11,?,14,6,18,12
Now add the 1st number and the last number .. it is 20.
not add the 2nd number which is 2 and the last but one number which is 18 ... it is 20..
So if you keep adding these all the sum equals to 20. So the number next to 11 should be 9. Any thoughts :-)

Above answer was rated as good by the following members:
naidu_n_r, imajination, SKumarVembani, rajani_vaddepalli15, Shwethascar, suyogpatil09

February 24, 2008 04:35:19

ramyaac

Member Since: January 2008 Contribution: 1

RE: missing number

The missing number is 5!! the given numbers r:
8 2 14 6 11 ? 14 6 18 12
Now...
8-6 2.
14-8 6.
again..after the missing number 14-8 6 n 18-6 12!
And so the missing number shuld be 11-6 5!!
Hopefully the answer is 5...if any body comes up wid another answer..plz do post it!!

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February 25, 2008 04:51:48

rkpadki

Member Since: February 2008 Contribution: 4

RE: missing number

Hi

I came up with another thought...

the numbers are 8 2 14 6 11 ? 14 6 18 12
Now add the 1st number and the last number .. it is 20.
not add the 2nd number which is 2 and the last but one number which is 18 ... it is 20..
So if you keep adding these all the sum equals to 20. So the number next to 11 should be 9. Any thoughts :-)

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5 0

Overall Rating: +5

March 25, 2008 13:26:06

mrbhush

Member Since: March 2008 Contribution: 8

RE: missing number

8 2 14 6 11 ? 14 6 18 12
Answer : 21.

here we can see the difference between pairs...
in first pair : 8-2 6 then
14-6 8

11-? 11-21 10

14-6 8
18-12 6.

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0 1

Overall Rating: -1

March 25, 2008 13:32:38

mrbhush

Member Since: March 2008 Contribution: 8

RE: missing number

sorry 21 s worng.

correct answer: 1

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0 1

Overall Rating: -1

April 11, 2008 01:22:28

shyaamsundar

Member Since: April 2008 Contribution: 3

RE: missing number

Answer is 9

8+12 20
2+18 20
14 6 20
6+14 20
11+x 20

adding the first and the last no
addind the second and the last but one and so on....

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1 0

Overall Rating: +1

July 16, 2009 14:16:14

anand3186

Member Since: July 2009 Contribution: 12

RE: missing number

8 2 14 6 11 ? 14 6 18 12

-6 +12 -8 +5 (*) -8 +12 -6

Following the series (*) has to be +5 . . .

So ? + 5 14.

the missing no is 9.

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1 0

Overall Rating: +1

November 11, 2009 09:05:28

johny007smart

Member Since: November 2009 Contribution: 1

RE: missing number

8+12 20
2+18 20
14+6 20
6+14 20
11+9 20

The answer is 9

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