Find the missing term: 20, 20, 19, 16, 17, 13, 14, 11, ?, ?
A. 10, 10
B. 10, 11
C. 13, 14
D. 13, 16
Answer & Solution
Answer: Option A
Solution:
Let the missing terms of the series be x1 and x2.
Thus, the sequence 20, 20, 19, 16, 17, 13, 14, 11. x1, x2 is a combination of two series:
I. 20, 19, 17, 14, x1 and
II. 20, 16, 13, 11, x2
The pattern in I is – 1, – 2, – 3,…………..So, missing term, x1= 14 – 4 = 10
The pattern in II is – 4, – 3, – 2,………. So,missing term, x2 = 11 – 1 = 10
Also Read:
- 1, 9, 25, 49, ?, 121.
- 4, 7, 12, 19, 28, ?
- 6, 11, 21, 36, 56, ?
- 10, 100, 200, 310, ?
- 8, 28, 116, 584, ?
- 3, 7, 23, 95, ?
- 7, 26, 63, 124, 215, 342, ?
- 165, 195, 255, 285, 345, ?
- 34, 45, 56, 67, ……. What number should come next?
- Find out the wrong number. 150, 450, 750, 1060,1350,1650,1950
