**Number series tricks Directions to Solve** In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much

**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)

Answer: Option B

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

A. 7

B. 10

C. 12

D. 13

Answer: Option B

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

**3.Look at this series: 36, 34, 30, 28, 24, … What number should come next?**

A. 20

B. 22

C. 23

D. 26

Answer: Option B

This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.

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

A. 22

B. 24

C. 25

D. 26

Answer: Option C

In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.

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

A. 12

B. 14

C. 27

D. 53

Answer: Option B

In this series, each number is repeated, then 13 is subtracted to arrive at the next number.

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**6.Look at this series: 21, 9, 21, 11, 21, 13, 21, … What number should come next?**

A. 14

B. 15

C. 21

D. 23

Answer: Option B

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

A. 26

B. 28

C. 30

D. 32

Answer: Option B

This is a simple subtraction series. Each number is 6 less than the previous number.

**8.Look at this series: 3, 4, 7, 8, 11, 12, … What number should come next?**

A. 7

B. 10

C. 14

D. 15

Answer: Option D

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.Look at this series: 8, 22, 8, 28, 8, … What number should come next?**

A. 9

B. 29

C. 32

D. 34

Answer: Option D

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.