**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)

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

A.7

B.10

C.12

D.13

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

A.20

B.22

C.23

D.26

*Ans:* Option B

Explanation:

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

*Ans:* Option C

Explanation:

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

*Ans:* Option B

Explanation:

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