1. Find the missing term: 11, 13, 17, 19, 23, 25, ?

a) 26

b) 27

c) 29

d) 37

Explanation: The pattern is +2,+4,+2,+4,

So, missing term = 25 + 4 = 29

2. Find the missing term: 6, 13, 25, 51, 101. ?

a) 201

b) 202

c) 203

d) 205

Explanation: The pattern is x2+1,x2-1,x2+1,x2-1.x...................

So, missing term =101x2+1=203

3. Find the missing term: 6, 12, 21, ?, 48

a) 33

b) 38

c) 40

d) 45

Explanation: The pattern is +6, +9, +12, +15...............

So, missing term=21+12=33

4. Find the missing term: 8, 28, 116, 584 , ?

a) 1752

b) 3502

c) 3504

d) 3508

Explanation: The pattern is x3+4, x4+4, x5+4,...............

So, missing term=584x6+4=3508

5. Find the missing term: 2, 5, 9, ?, 20, 27

a) 14

b) 16

c) 18

d) 24

Explanation: The pattern is +3, +4, +5, +6,........

So, missing term=9+5=14

6. 15, __, 27, 27, 39, 39. What number should fill the blank?

a) 51

b) 39

c) 23

d) 15

Explanation: In this simple addition with repetition series, each number in the series repeats itself, and then increases by 12 to arrive at the next number.

7. 72, 76, 73, 77, 74, __, 75. What number should fill the blank?

a) 70

b) 71

c) 75

d) 78

Explanation: This series alternates the addition of 4 with the subtraction of 3.

8. J14, L16, __, P20, R22. What number should fill the blank?

a) S24

b) N18

c) M18

d) T24

Explanation: In this series, the letters progress by 2, and the numbers increase by 2.

9. 4, 7, 25, 10, __, 20, 16, 19. What number should fill the blank?

a) 13

b) 15

c) 20

d) 28

Explanation: Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.

10. XXIV, XX, __, XII, VIII. What number should fill the blank?

a) XXII

b) XIII

c) XVI

d) IV

Explanation: This is a simple subtraction series; each number is 4 less than the previous number.