Number Series

1.	Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
	A. (1/3) B. (1/8) C. (2/8) D. (1/16)

2.Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?

A.	7	B.	10
C.	12	D.	13

3.	Look at this series: 36, 34, 30, 28, 24, ... What number should come next?
	A. 20 B. 22 C. 23 D. 26

4.Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next?

A.	22	B.	24
C.	25	D.	26

5.Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next?

A.	12	B.	14
C.	27	D.	53

6.Look at this series: 58, 52, 46, 40, 34, ... What number should come next?

A.	26	B.	28
C.	30	D.	32

7. Look at this series: 58, 52, 46, 40, 34, ... What number should come next?

A.	26	B.	28
C.	30	D.	32

8.	Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next?
	A. 7 B. 10 C. 14 D. 15

	9.Look at this series: 8, 22, 8, 28, 8, ... What number should come next?
	A. 9 B. 29 C. 32 D. 34

10.	Look at this series: 31, 29, 24, 22, 17, ... What number should come next?
	A. 15 B. 14 C. 13 D. 12

Answers

1: Option B
Explanation:This is a simple division series; each number is one-half of the previous number.
In other terms to say, the number is divided by 2 successively to get the next result.

4/2 = 2
2/2 = 1
1/2 = 1/2
(1/2)/2 = 1/4
(1/4)/2 = 1/8 and so on.

2. Option B

Explanation:
This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted. 

3.: Option B
Explanation:
This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on. 

4.: Option C
Explanation:
In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on. 

5.: Option B
Explanation:
In this series, each number is repeated, then 13 is subtracted to arrive at the next number. 

6. Option B
Explanation:
In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9. 

7.: Option B
Explanation:
This is a simple subtraction series. Each number is 6 less than the previous number. 

8. Option D
Explanation:
This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on. 

9.Option D
Explanation:
This is a simple addition series with a random number, 8, interpolated as every other number. In the series, 6 is added to each number except 8, to arrive at the next number. 

10.Option A
Explanation:
This is a simple alternating subtraction series, which subtracts 2, then 5

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