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SSC CHSL Logical Reasoning Questions
Practise logical reasoning (reasoning) for the SSC Combined Higher Secondary Level 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.
Logical Reasoning practice
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Q1.Which number is the odd one out: 13, 21, 35, 65?
Show answer & explanation
Answer: D — 13
21, 65, 35 are composite; 13 is prime.
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Q2.If DOG is coded as GRJ, how is BOOK coded?
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Answer: A — ERRN
Each letter moves 3 places forward in the alphabet (DOG → GRJ), so BOOK → ERRN.
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Q3.What is the angle between the hour and minute hands of a clock at 6:40?
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Answer: A — 40°
Angle = |30H − 5.5M| = |30×6 − 5.5×40| = 40°.
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Q4.Ravi walks 12 m north, turns right and walks 5 m, then turns right again and walks 7 m. How far is he from the start?
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Answer: D — 7.07 m
Net: 5 m north and 5 m east. Distance = √(5² + 5²) = 7.07 m.
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Q5.What day of the week was 23 December 2024?
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Answer: D — Monday
Using odd days (or Zeller’s rule), 23 December 2024 falls on a Monday.
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Q6.What is the angle between the hour and minute hands of a clock at 7:00?
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Answer: D — 150°
Angle = |30H − 5.5M| = |30×7 − 5.5×0| = 210°; the smaller angle is 360 − that = 150°.
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Q7.Ravi walks 6 m north, turns right and walks 7 m, then turns right again and walks 4 m. How far is he from the start?
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Answer: A — 7.28 m
Net: 2 m north and 7 m east. Distance = √(2² + 7²) = 7.28 m.
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Q8.What is the angle between the hour and minute hands of a clock at 4:25?
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Answer: B — 17.5°
Angle = |30H − 5.5M| = |30×4 − 5.5×25| = 17.5°.
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Q9.Which number is the odd one out: 31, 41, 59, 63?
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Answer: C — 63
31, 59, 41 are prime; 63 is composite (63 = 3 × 21).
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Q10.Which number is the odd one out: 17, 29, 31, 49?
Show answer & explanation
Answer: C — 49
31, 29, 17 are prime; 49 is composite (49 = 7 × 7).
How to approach logical reasoning questions
For coding questions write the letter positions (A = 1 … Z = 26). For directions, draw axes and track each turn. Clock angle = |30H − 5.5M|. Calendar: count odd days.
About SSC CHSL
SSC Combined Higher Secondary Level Examination — conducted by Staff Selection Commission (SSC). Recruits Class 12 pass candidates for posts such as LDC, JSA and Data Entry Operator.
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.
SSC CHSL practice topics
| Topic | Section | Question source |
|---|---|---|
| Percentages | Quantitative aptitude | Calculated (new numbers every set) |
| Averages & Statistics | Quantitative aptitude | Calculated (new numbers every set) |
| Number System & Simplification | Quantitative aptitude | Calculated (new numbers every set) |
| Logical Reasoning | Reasoning | Calculated (new numbers every set) |
| English Grammar | English | Question bank |
| Vocabulary & Idioms | English | Question bank |
| Indian Polity, History & Geography | General awareness | Question bank |