- No data uploaded
- Instant results
IBPS Clerk Number System & Simplification Questions
Practise number system & simplification (quantitative aptitude) for the IBPS Clerical Cadre 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
-
Q1.Find the LCM of 30 and 70.
Show answer & explanation
Answer: A — 210
LCM(30, 70) = 210. Check: HCF × LCM = 10 × 210 = 2100 = product of the numbers.
-
Q2.Find the next number in the series: 17, 24, 31, 38, 45, ?
Show answer & explanation
Answer: B — 52
Each term increases by 7.
-
Q3.Find the HCF of 21 and 21.
Show answer & explanation
Answer: B — 21
HCF(21, 21) = 21. Check: HCF × LCM = 21 × 21 = 441 = product of the numbers.
-
Q4.Find the HCF of 28 and 14.
Show answer & explanation
Answer: B — 14
HCF(28, 14) = 14. Check: HCF × LCM = 14 × 28 = 392 = product of the numbers.
-
Q5.Find the next number in the series: 3, 6, 12, 24, 48, ?
Show answer & explanation
Answer: D — 96
Each term is multiplied by 2.
-
Q6.Find the LCM of 32 and 16.
Show answer & explanation
Answer: A — 32
LCM(32, 16) = 32. Check: HCF × LCM = 16 × 32 = 512 = product of the numbers.
-
Q7.What is √3,844?
Show answer & explanation
Answer: D — 62
62 × 62 = 3844, so √3844 = 62.
-
Q8.What is √1,444?
Show answer & explanation
Answer: A — 38
38 × 38 = 1444, so √1444 = 38.
-
Q9.What is √1,089?
Show answer & explanation
Answer: B — 33
33 × 33 = 1089, so √1089 = 33.
-
Q10.Find the LCM of 36 and 108.
Show answer & explanation
Answer: C — 108
LCM(36, 108) = 108. Check: HCF × LCM = 36 × 108 = 3888 = product of the numbers.
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 Clerk
IBPS Clerical Cadre Examination — conducted by Institute of Banking Personnel Selection (IBPS). Recruits customer service associates (clerks) for public sector 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 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) |
| English Grammar | English | Question bank |
| Economy & Banking Awareness | General awareness | Question bank |
| Computer Awareness | Computer knowledge | Question bank |