1. Find the next number: 16, 25, 36, 49, ?
Mid- A.56.32
- B.79.36
- C.64
- D.71.68
Number Series interview questions
20 real Number Series questions from the Aptitude bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
2. Find the next number: 6, 14, 22, 30, 38, ?
Mid- A.57.04
- B.46
- C.51.52
- D.40.48
3. Find the next number: 2, 6, 18, 54, ?
Mid- A.162
- B.142.56
- C.181.44
- D.200.88
4. Find the next number: 9, 16, 25, 36, ?
Mid- A.54.88
- B.49
- C.60.76
- D.43.12
5. Find the next number: 1, 4, 9, 16, ?
Mid- A.28
- B.22
- C.31
- D.25
6. Find the next number: 9, 17, 25, 33, 41, ?
Mid- A.49
- B.43.12
- C.60.76
- D.54.88
7. Find the next number: 4, 9, 16, 25, ?
Mid- A.40.32
- B.31.68
- C.36
- D.44.64
8. Find the next number: 3, 5, 7, 9, 11, ?
Mid- A.14.56
- B.16.12
- C.13
- D.11.44
9. Find the next number: 3, 9, 27, 81, ?
Mid- A.243
- B.301.32
- C.272.16
- D.213.84
10. Find the next number: 4, 8, 16, 32, ?
Mid- A.71.68
- B.64
- C.79.36
- D.56.32
11. Find the next number: 3, 6, 12, 24, ?
Mid- A.53.76
- B.59.52
- C.42.24
- D.48
12. Find the next number: 8, 15, 22, 29, 36, ?
Mid- A.48.16
- B.37.84
- C.53.32
- D.43
13. Find the next number: 8, 13, 18, 23, 28, ?
Mid- A.40.92
- B.29.04
- C.36.96
- D.33
14. Find the next number: 2, 4, 8, 16, ?
Mid- A.28.16
- B.39.68
- C.32
- D.35.84
15. Find the next number: 4, 6, 8, 10, 12, ?
Mid- A.12.32
- B.15.68
- C.14
- D.17.36
16. Find the next number: 4, 12, 36, 108, ?
Mid- A.401.76
- B.362.88
- C.324
- D.285.12
17. Find the next number: 3, 11, 19, 27, 35, ?
Mid- A.48.16
- B.43
- C.37.84
- D.53.32
18. Find the next number: 5, 14, 23, 32, 41, ?
Mid- A.44
- B.56
- C.62
- D.50
19. Find the next number: 3, 10, 17, 24, 31, ?
Mid- A.38
- B.42.56
- C.33.44
- D.47.12
20. Find the next number: 5, 9, 13, 17, 21, ?
Mid- A.31
- B.25
- C.28
- D.22
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