Quantitative Aptitude MCQ

Correct answer: 36. 12 = 2²×3, 18 = 2×3²; LCM = 2²×3² = 36.

Correct answer: 9. 9 is the only composite number; the rest are prime.

Correct answer: 5 km. By Pythagoras: √(3² + 4²) = √25 = 5 km.

Correct answer: 180. Number = 45 ÷ 0.25 = 180.

Correct answer: 10 days. Work = 60 worker-days; 60 ÷ 6 = 10 days.

Numerical ability and reasoning questions for competitive exams.

Q11. The LCM of 12 and 18 is: Easy

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Q12. Odd one out: 3, 5, 7, 9, 11 Medium

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Q13. A man walks 3 km north, then 4 km east. How far is he from his start? Medium

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Q14. 25% of a number is 45. The number is: Easy

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Q15. If 5 workers finish a job in 12 days, how long do 6 workers take (same rate)? Medium

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