Home Subjects Verbal Reasoning Series Completion

Verbal Reasoning
Series Completion

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14 Q 5 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 1–10 of 14
Topics in Verbal Reasoning
Complete the series: 4, 9, 25, 49, 121, 169, ?
A 289
B 361
C 225
D 196
Correct Answer:  A. 289
EXPLANATION

Pattern: Squares of prime numbers. 2²=4, 3²=9, 5²=25, 7²=49, 11²=121, 13²=169, 17²=289. The series consists of squares of consecutive prime numbers.

Test
Find missing term: 5, 11, 23, 47, 95, ?
A 185
B 190
C 191
D 192
Correct Answer:  C. 191
EXPLANATION

Each term is (previous × 2) + 1: (5×2)+1=11, (11×2)+1=23, (23×2)+1=47, (47×2)+1=95, (95×2)+1=191

Test
Complete: 1, 2, 6, 24, 120, ?
A 600
B 720
C 840
D 960
Correct Answer:  B. 720
EXPLANATION

Factorial series: 1!, 2!, 3!, 4!, 5!, 6! = 720

Test
Complete the series: 3, 7, 15, 31, 63, ?
A 127
B 128
C 129
D 130
Correct Answer:  A. 127
EXPLANATION

Each term follows 2ⁿ - 1: (2¹-1), (2³-1), (2⁴-1), (2⁵-1), (2⁶-1), (2⁷-1) = 127

Test
Complete: 7, 11, 16, 22, 29, 37, ?
A 44
B 45
C 46
D 47
Correct Answer:  C. 46
EXPLANATION

Differences: +4, +5, +6, +7, +8, +9. So 37 + 9 = 46

Test
Complete the series: 5, 15, 30, 50, 75, ?
A 105
B 100
C 110
D 115
Correct Answer:  A. 105
EXPLANATION

Pattern: 5×1, 5×3, 5×6, 5×10, 5×15, 5×21. Multipliers follow triangular numbers: 105

Test
Find the next term: 2, 8, 18, 32, 50, 72, ?
A 98
B 100
C 102
D 96
Correct Answer:  A. 98
EXPLANATION

Pattern: 2n(n+1) for n=1,2,3... gives 2, 8, 18, 32, 50, 72, 98

Test
Complete the series: 2, 8, 18, 32, 50, ?, 98
A 70
B 72
C 74
D 76
Correct Answer:  B. 72
EXPLANATION

Pattern: 2n² where n = 1,2,3,4,5,6,7. For n=6: 2(36) = 72

Test
Complete: 3, 8, 15, 24, 35, ?, 63
A 46
B 47
C 48
D 50
Correct Answer:  C. 48
EXPLANATION

Pattern: n² + 2n where n = 1,2,3,4,5,6,7. For n=6: 36 + 12 = 48

Test
Find the missing number: 1, 4, 10, 20, 35, ?
A 52
B 54
C 56
D 58
Correct Answer:  B. 54
EXPLANATION

Tetrahedral numbers or pattern with differences 3, 6, 10, 15, 19. Answer: 35 + 19 = 54

Test
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