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Q1. Find the next number: 4, 13, 22, 31, 40, ?
Arithmetic progression with common difference 9. Next = 49.
General Aptitude
Number Series
Sharpen pattern recognition with arithmetic, geometric, and mixed number series questions.
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Q2. Find the next number: 6, 9, 12, 15, 18, ?
Arithmetic progression with common difference 3. Next = 21.
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Q3. Find the next number: 10, 14, 18, 22, 26, ?
Arithmetic progression with common difference 4. Next = 30.
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Q4. Find the next number: 6, 10, 14, 18, 22, ?
Arithmetic progression with common difference 4. Next = 26.
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Q5. Find the next number: 11, 15, 19, 23, 27, ?
Arithmetic progression with common difference 4. Next = 31.
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Q6. Find the next number: 3, 9, 15, 21, 27, ?
Arithmetic progression with common difference 6. Next = 33.
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Q7. Find the next number: 15, 23, 31, 39, 47, ?
Arithmetic progression with common difference 8. Next = 55.
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Q8. Find the next number: 8, 15, 22, 29, 36, ?
Arithmetic progression with common difference 7. Next = 43.
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Q9. Find the next number: 10, 26, 11, 25, 18, 31, ?
Odd positions follow +2 sequence. Next odd-position term is 20.
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Q10. Find the next number: 15, 28, 12, 33, 10, 34, ?
Odd positions follow +2 sequence. Next odd-position term is 12.
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Q11. Find the next number: 13, 21, 29, 37, 45, ?
Arithmetic progression with common difference 8. Next = 53.
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Q12. Find the next number in the pattern: 3, 9, 27, 81, 243, ?
Geometric progression with ratio 3. Next = 243 x 3 = 729.
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Q13. Find the next number: 5, 26, 7, 28, 15, 30, ?
Odd positions follow +2 sequence. Next odd-position term is 17.
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Q14. Find the next number: 5, 20, 16, 26, 14, 32, ?
Odd positions follow +2 sequence. Next odd-position term is 16.
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Q15. Find the next number in the pattern: 4, 8, 16, 32, 64, ?
Geometric progression with ratio 2. Next = 64 x 2 = 128.
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Q16. Find the next number in the pattern: 5, 10, 20, 40, 80, ?
Geometric progression with ratio 2. Next = 80 x 2 = 160.
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Q17. Find the next number: 5, 29, 17, 35, 12, 30, ?
Odd positions follow +2 sequence. Next odd-position term is 14.
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Q18. Find the next number: 7, 29, 14, 29, 11, 34, ?
Odd positions follow +2 sequence. Next odd-position term is 13.
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Q19. Find the next number in the pattern: 4, 12, 36, 108, 324, ?
Geometric progression with ratio 3. Next = 324 x 3 = 972.
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Q20. Find the next number in the pattern: 2, 4, 8, 16, 32, ?
Geometric progression with ratio 2. Next = 32 x 2 = 64.
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Number Series Practice Questions with Answers
Build speed and accuracy with curated number series practice. Each quiz includes solved explanations, timed mode, and instant correctness feedback to help with placement tests and competitive exams.
How to prepare effectively for number series?
Start with daily timed sets, review every explanation, and note recurring mistake patterns for revision.
Are these number series questions useful for placements?
Yes. The format mirrors common aptitude screening rounds with objective questions and option-based answers.