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IBPS RRB Clerk Number System & Simplification Questions
Practise number system & simplification (quantitative aptitude) for the IBPS RRB Office Assistant Examination: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Number System & Simplification practice
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Q1.Simplify: 22 + 8 × 6 − 5
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Answer: A — 65
BODMAS: multiply first — 8 × 6 = 48; then 22 + 48 − 5 = 65.
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Q2.Simplify: 37 + 11 × 8 − 44
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Answer: D — 81
BODMAS: multiply first — 11 × 8 = 88; then 37 + 88 − 44 = 81.
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Q3.What is √8,464?
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Answer: D — 92
92 × 92 = 8464, so √8464 = 92.
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Q4.What is √400?
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Answer: D — 20
20 × 20 = 400, so √400 = 20.
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Q5.What is √6,084?
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Answer: A — 78
78 × 78 = 6084, so √6084 = 78.
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Q6.Find the next number in the series: 2, 4, 8, 16, 32, ?
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Answer: C — 64
Each term is multiplied by 2.
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Q7.What is √9,801?
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Answer: B — 99
99 × 99 = 9801, so √9801 = 99.
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Q8.Find the next number in the series: 15, 17, 21, 27, 35, ?
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Answer: C — 45
Differences are 2, 4, 6, 8 → next difference 10.
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Q9.What is √841?
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Answer: D — 29
29 × 29 = 841, so √841 = 29.
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Q10.What is √5,329?
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Answer: D — 73
73 × 73 = 5329, so √5329 = 73.
How to approach number system & simplification questions
Learn squares to 30 and cubes to 15, apply BODMAS strictly, and use HCF × LCM = product of two numbers. For series, check the differences first, then the ratios.
About IBPS RRB Clerk
IBPS RRB Office Assistant Examination — conducted by Institute of Banking Personnel Selection (IBPS). Recruits Office Assistants (multipurpose) for Regional Rural Banks.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
IBPS RRB Clerk practice topics
| Topic | Section | Question source |
|---|---|---|
| Number System & Simplification | Quantitative aptitude | Calculated (new numbers every set) |
| Percentages | Quantitative aptitude | Calculated (new numbers every set) |
| Logical Reasoning | Reasoning | Calculated (new numbers every set) |
| Economy & Banking Awareness | General awareness | Question bank |
| Computer Awareness | Computer knowledge | Question bank |