## Quantitative Aptitude

### Sequence and Series

Question
14 out of 30

Find out missing number.

8, 9, 8, 7, 10, 9, 6, 11, 10, ?, 12

 A 5 B 7 C 8 D 11 E None of these

Ans. A The given sequence is a combination of three series :

I. 1st, 4th, 7th, 10th terms i.e. 8, 7, 6, ?

II. 2nd, 5th, 8th, 11th terms i.e. 9, 10, 11, 12

III. 3rd, 6th, 9th terms i.e. 8, 9,10

Clearly, I consists of consecutive numbers in decreasing order. So, the missing term is 5.