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.