1. Find the missing term: 36, 34, 30, 28, 24, ?

a) 20

b) 23

c) 22

d) 26

Explanation: Missing term is 22.

2. Find the missing term : 3, 5, 9, 17, ?

a) 33

b) 42

c) 26

d) 65

Explanation: 1st term : 3

2nd term : 3 + 2 = 5

3rd term : 5 + 4 = 9

4th term : 9 + 8 = 17

So,

5th term : 17 + 16 = 33

3. Find the missing term :9*2 : 9*9 : : 9*5 : ?

a) 9*4

b) 9*6

c) 9*7

d) 9*8

Explanation: 9 × 2 : 9 × 9 : : 9 × 5 : ?

18 : 81 : : 45 :

**9 × 6**

So. 9 × 6 will come in place of question mark.

4. Find the missing term : 1, 0, 3, 2, 5, 6, ?, 12, 9, 20

a) 9

b) 10

c) 7

d) 8

Explanation: There are two series in the given question.

1st series: 1, 3, 5,

**7**, 9 ... ( each next term are generated by adding 2)

2nd series: 0, 2, 6, 12, 20 ... ( each next term are generated by adding 2n [where n=1,2,3,4...])

5. Find the missing term : 5, 16, 51, 158, ?

a) 1452

b) 483

c) 481

d) 1454

Explanation: The series is as follows:

5 × 3 + 1 = 16

16 × 3 + 3 = 51

51 × 3 + 5 = 158

158 × 3 + 7= 481

6. Find out the wrong term: 1, 5, 9, 15, 25, 37, 49

a) 9

b) 15

c) 25

d) 37

Explanation: The terms of the given series are 1

^{2}, (2

^{2}+ 1), 3

^{2}, (4

^{2}+ 1), 5

^{2}, (6

^{2}+ 1), 7

^{2}

So, 15 is wrong and must be replaced by (4

^{2}+ 1) i.e., 17.

7. Find out the wrong term: 445, 221, 109, 46, 25, 11, 4

a) 25

b) 46

c) 109

d) 221

Explanation: 3 is subtracted from each number and the result divided by 2 to obtain the next number of the series,

So, 46 is wrong and must be replaced by

^{(109 - 3)}/

_{2}i.e., 53.

8. Find out the wrong term: 11, 5, 20, 12, 40, 26, 74, 54

a) 5

b) 20

c) 40

d) 26

Explanation: The given sequence is a combination of two series:

I: 11, 20, 40, 74 and

II: 5, 12, 26, 54

The correct pattern in I: is + 9, + 18, + 36,.....

So, 40 is wrong and must be replaced by (20 + 18) i.e., 38.

9. Find out the wrong term: 93, 309, 434, 498, 521, 533

a) 309

b) 434

c) 498

d) 521

Explanation: The correct pattern is + 6

^{3}, + 5

^{3}, + 4

^{3}, + 3

^{3}, ............

So, 521 is wrong and must be replaced by (498 + 3

^{3}) i.e., 525.

10. Find out the wrong term: 1, 5, 5, 9, 7, 11, 11, 15, 12, 17

a) 11

b) 12

c) 17

d) 15

Explanation: The given sequence is a combination of two series :

I: 1, 5, 7, 11, 12 and

II: 5, 9, 11, 15, 17

The pattern in both I and II is + 4, + 2, + 4, + 2,

So, 12 is wrong and must be replaced by (11 + 2) i.e., 13.