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Number Series

16 July 2026 Quantitative Aptitude 114+ Participants Challenge Completed
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Challenge Details
Number Series
Missing / Wrong Number Series
Completed
Questions
15
Full Marks
15
Negative
0.25
Duration
15 min
Solutions & Explanations
15 topic group(s) · Review all correct answers
1
Find the missing number (?) in the following series.
?, 100, 150, 375, 1312.5
A 100
B 200
C 150
D 400
E 50
Explanation
Pattern of series: 200 × 0.5 = 100, 100 × 1.5 = 150, 150 × 2.5 = 375, 375 × 3.5 = 1312.5. Therefore, the missing number is 200.
2
Find the missing number (?) in the following series.
104, ?, 96, 120, 88, 128
A 112
B 110
C 114
D 118
E 108
Explanation
Pattern of series: 104 + 8 = 112, 112 - 16 = 96, 96 + 24 = 120, 120 - 32 = 88, 88 + 40 = 128.
3
Find the missing number (?) in the following series.
15, 8, 9, 15, 32, ?
A 66
B 99
C 80
D 82.5
E 80.5
Explanation
Pattern of series: 15 × 0.5 + 0.5 = 8; 8 × 1 + 1 = 9; 9 × 1.5 + 1.5 = 15; 15 × 2 + 2 = 32; 32 × 2.5 + 2.5 = 82.5.
4
Find the missing number (?) in the following series.
6, 8, 14, 26, 46, ?
A 72
B 84
C 96
D 80
E 76
Explanation
Differences: 2, 6, 12, 20, 30. Second differences: 4, 6, 8, 10. Next difference is 30, so 46 + 30 = 76.
5
Find the missing number (?) in the following series.
72000, 36000, 12000, 3000, 600, ?
A 120
B 200
C 300
D 150
E 100
Explanation
Pattern of series: 72000 ÷ 2 = 36000; 36000 ÷ 3 = 12000; 12000 ÷ 4 = 3000; 3000 ÷ 5 = 600; 600 ÷ 6 = 100.
6
Find the missing number (?) in the following series.
9.8, ?, 8.9, 11.6, 8, 12.5
A 10.7
B 11.7
C 10.5
D 10.9
E 11.3
Explanation
Pattern of series: 9.8 + 0.9 = 10.7; 10.7 - 1.8 = 8.9; 8.9 + 2.7 = 11.6; 11.6 - 3.6 = 8; 8 + 4.5 = 12.5.
7
Find the missing number (?) in the following series.
400, 274, 209, 181, 172, ?
A 169
B 173
C 134
D 171
E 170
Explanation
Subtract 126, 65, 28, 9, 2 where: 126 = 5³ + 1; 65 = 4³ + 1; 28 = 3³ + 1; 9 = 2³ + 1; 2 = 1³ + 1. Next term: 172 - 2 = 170.
8
Find the missing number (?) in the following series.
1, 1, ?, 15, 105, 945
A 2
B 3
C 4
D 1.5
E 2.5
Explanation
Pattern of series: 1 × 1 = 1; 1 × 3 = 3; 3 × 5 = 15; 15 × 7 = 105; 105 × 9 = 945.
9
Find the missing number (?) in the following series.
12, ?, 6, 9, 18, 45
A 15
B 8
C 6
D 12
E 4
Explanation
Pattern of series: 12 × 1.25 = 15; 15 × 0.4 = 6; 6 × 1.5 = 9; 9 × 2 = 18; 18 × 2.5 = 45.
10
Find the missing number (?) in the following series.
34, 18, 10, 6, ?, 3
A 9
B 4
C 3
D 2
E 6
Explanation
Pattern of series: 34 ÷ 2 + 1 = 18; 18 ÷ 2 + 1 = 10; 10 ÷ 2 + 1 = 6; 6 ÷ 2 + 1 = 4; 4 ÷ 2 + 1 = 3.
11
Find the missing number (?) in the following series.
1.5, 3, 12, 72, 576, ?
A 5480
B 5620
C 5580
D 5340
E 5760
Explanation
Pattern of series: 1.5 × 2 = 3; 3 × 4 = 12; 12 × 6 = 72; 72 × 8 = 576; 576 × 10 = 5760.
12
Find the missing number (?) in the following series.
80, 66, 85, 61, 90, ?
A 50
B 56
C 64
D 60
E 63
Explanation
Pattern of series: 80 - 14 = 66; 66 + 19 = 85; 85 - 24 = 61; 61 + 29 = 90; 90 - 34 = 56.
13
Find the missing number (?) in the following series.
163, ?, 43, 23, 13, 8
A 92
B 83
C 78
D 54
E 69
Explanation
Pattern of series: 163 - 80 = 83; 83 - 40 = 43; 43 - 20 = 23; 23 - 10 = 13; 13 - 5 = 8.
14
Find the missing number (?) in the following series.
150, 152, 157, 167, 184, ?
A 229
B 245
C 232
D 210
E 206
Explanation
Differences: 2, 5, 10, 17, 26. Their successive increments are +3, +5, +7, +9. Therefore, 184 + 26 = 210.
15
Find the missing number (?) in the following series.
3.5, 2.5, 3, 6, 20, ?
A 95
B 80
C 65
D 75
E 90
Explanation
Pattern of series: 3.5 × 1 - 1 = 2.5; 2.5 × 2 - 2 = 3; 3 × 3 - 3 = 6; 6 × 4 - 4 = 20; 20 × 5 - 5 = 95.
Global Rankings
Hall of Fame
16 July 2026
Komali Dakoju
10.50
15m 00s
Chandu Gowda
8.25
13m 02s
Karan
8.00
15m 00s
#4
Pavitra Hanumanthu
7.75
15m 00s
#5
SUBHASHRI SJ
7.50
14m 48s
#6
Lavanya
7.50
15m 00s
#7
Simran Hagare
7.50
15m 00s
#8
srivasthav
6.75
15m 00s
#9
Likhita Madaka
5.00
12m 09s
#10
ASHMI
2.50
13m 29s
Challenge Info
Date 16 July 2026
Subject Quantitative Aptitude
Topic Missing / Wrong Number Series
Questions 15 MCQs
Negative 0.25 / wrong
Attempted 114+
Learner Voices

What Aspirants Said About This Challenge

Real feedback from 114+ students who attempted the Missing / Wrong Number Series challenge on 16 Jul 2026

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About This Challenge

Missing / Wrong Number Series MCQs for IBPS SO 2026 16 Jul 2026

This AgriPrep Daily Challenge, held on 16 July 2026, tested aspirants on Missing / Wrong Number Series — a core topic under Quantitative Aptitude — through 15 carefully curated MCQs following the exact IBPS SO 2026 exam pattern. Each question carries 1 mark with a negative marking of 0.25 marks per wrong attempt.

Daily challenge practice on AgriPrep.in mirrors the actual IBPS SO Prelims environment — time pressure, negative marking, and topic-specific depth — making it one of the most effective ways to build exam-ready knowledge in Missing / Wrong Number Series.

Why Missing / Wrong Number Series Matters

Exam Relevance for IBPS SO

  • Missing / Wrong Number Series is a Quantitative Aptitude topic and frequently tested in IBPS SO Prelims, often carrying 2–4 questions in past papers.
  • Conceptual clarity in Missing / Wrong Number Series helps answer both direct and applied questions, which make up the majority of the paper.
  • The 15 questions in this set cover diverse sub-angles of Missing / Wrong Number Series, ensuring comprehensive coverage rather than rote recall.
  • Attempting this challenge daily builds topic-wise accuracy and reduces negative-marking risk on exam day.
How to Use This Page

Maximise Your Review Session

  1. Attempt first, review later. If the arena is still live, attempt the challenge before reading solutions — this builds genuine exam habit.
  2. Read every explanation. Even if you answered correctly, the explanation reveals deeper logic and connected concepts.
  3. Note your weak patterns. Track which option types you commonly confuse — most errors in Missing / Wrong Number Series follow predictable patterns.
  4. Check the leaderboard. Compare your score against top rankers to set a realistic target for the next challenge.
Frequently Asked

Questions About This Challenge

What is the correct answer for Missing / Wrong Number Series questions in IBPS SO July 2026?
Detailed correct answers and explanations for all 15 Missing / Wrong Number Series MCQs from the 16 July 2026 challenge are available on this page after 09:15 PM IST.
How many questions were asked on Missing / Wrong Number Series in the AgriPrep Daily Challenge on 16 Jul 2026?
15 multiple-choice questions on Missing / Wrong Number Series (Quantitative Aptitude) were asked in the IBPS SO Daily Challenge on 16 July 2026.
When are results declared for the AgriPrep IBPS SO Daily Challenge?
Results and the full leaderboard are declared at 9:15 PM IST on the challenge day. Answer keys are released at 09:15 PM IST.
Is Missing / Wrong Number Series important for IBPS SO 2026?
Missing / Wrong Number Series falls under Quantitative Aptitude and is a regularly tested topic in IBPS SO Prelims. Daily MCQ practice on AgriPrep.in builds both speed and accuracy.
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