Q1. What is the next number inthe series: 2, 5, 10, 17, 26, ?
(a) 34
(b) 35
(c) 36
(d) 37
Answer: (d)
Explanation: The pattern adds consecutive odd numbers: +3, +5, +7, +9, +11 → 26+11=37.
Q2. Find the missing number: 12, 24, 36, ?, 60, 72 (a) 42
(b) 48
(c) 54
(d) 56
Answer: (b)
Explanation: The series increases by 12 each time → 36+12=48.
Q3. Identify the next term: 3, 9, 27, 81, ?
(a) 162
(b) 243
(c) 324
(d) 405
Answer: (b)
Explanation: Each term is multiplied by 3 → 81×3=243.
Q4. What number should replace the question mark? 5, 10, 20, 40, ?, 160
(a) 60
(b) 80
(c) 100
(d) 120
Answer: (b)
Explanation: Each term doubles the previous one → 40×2=80.
Q5. Find the missing number: 1, 4, 9, 16, ?, 36
(a) 20
(b) 25
(c) 30
(d) 32
Answer: (b)
Explanation: These are perfect squares: 1²,2²,3²,4²,5²,6² → 5²=25.
Q6. Determine the next term: 11, 22, 44, 88, ?
(a) 132 (b) 154
(c) 176
(d) 198
Answer: (c)
Explanation: Each term is multiplied by 2 → 88×2=176.
Q7. What comes next? 7, 14, 28, 56, 112, ?
(a) 168 (b) 224
(c) 256
(d) 336
Answer: (b)
Explanation: Double each time → 112×2=224.
Q8. Find the missing number: 2, 6, 12, 20, ?, 42
(a) 24
(b) 30 (c) 36
(d) 40
Answer: (b)
Explanation: Differences are 4,6,8,10,… → next difference 12 → 20+12=32? Wait recalc: Actually series pattern n(n+1): 1×2=2,2×3=6,3×4=12,4×5=20,5×6=30,6×7=42 → answer 30.
Q9. Identify the next term: 15, 30, 45, 60, ?
(a) 70
(b) 75
(c) 80
(d) 85
Answer: (b)
Explanation: Add 15 each time → 60+15=75.
Q10. What number should replace the question mark? 3, 8, 15, 24, ?, 48
(a) 30
(b) 35
(c) 40
(d) 45
Answer: (b)
Explanation: Pattern n²‑1: 2²‑1=3,3²‑1=8,4²‑1=15,5²‑1=24,6²‑1=35,7²‑1=48 → answer 35.
Q11. Find the missing term: 100, 50, 25, 12.5, ? (a) 6.25
(b) 7.5
(c) 8.0
(d) 9.0
Answer: (a) Explanation: Each term is halved → 12.5÷2=6.25.
Q12. What comes next in the series: 2, 3, 5, 8, 13, ?
(a) 18
(b) 20
(c) 21
(d) 24
Answer: (c)
Explanation: Fibonacci‑style addition: each term is sum of previous two → 8+13=21.
Q13. Find the missing number: 1, 1, 2, 6, 24, ?
(a) 48
(b) 96
(c) 120 (d) 144
Answer: (c)
Explanation: Factorial series: 0!=1,1!=1,2!=2,3!=6,4!=24,5!=120 → answer 120.
Q14. Determine the next term: 5, 25, 125, 625, ?
(a) 3125
(b) 2500
(c) 1875
(d) 1250 Answer: (a)
Explanation: Multiply by 5 each time → 625×5=3125.
Q15. What number replaces the question mark? 9, 18, 27, 36, ?, 54
(a) 40
(b) 42
(c) 45
(d) 48 Answer: (c)
Explanation: Add 9 each time → 36+9=45.
Q16. Find the missing term: 4, 9, 16, 25, ?, 49
(a) 30
(b) 36
(c) 40
(d) 42
Answer: (b)
Explanation: Perfect squares: 2²,3²,4²,5²,6²,7² → 6²=36.
Q17. What comes next? 1, 8, 27, 64, ?
(a) 100
(b) 125
(c) 216
(d) 343
Answer: (b)
Explanation: Cubes: 1³,2³,3³,4³,5³ → 5³=125.
Q18. Identify the next number: 2, 6, 12, 20, 30, ?
(a) 38
(b) 40
(c) 42
(d) 44
Answer: (c)
Explanation: Pattern n(n+1): 1×2=2,2×3=6,3×4=12,4×5=20,5×6=30,6×7=42 → answer 42.
Q19. Find the missing number: 14, 28, 56, 112, ?, 448
(a) 224
(b) 240
(c) 256
(d) 336
Answer: (a)
Explanation: Each term doubles → 112×2=224.
Q20. What term follows: 3, 6, 11, 18, 27, ? (a) 34
(b) 36
(c) 38 (d) 40
Answer: (c)
Explanation: Differences increase by 2: +3,+5,+7,+9,+11 → 27+11=38.
Q21. Determine the missing term: 0, 1, 1, 2, 3, 5, 8, ?
(a) 10
(b) 12
(c) 13
(d) 15
Answer: (c)
Explanation: Fibonacci series → 5+8=13.
Q22. What comes next in the series: 20, 18, 15, 11, 6, ?
(a) 0 (b) 1
(c) 2
(d) 3
Answer: (a)
Explanation: Subtract successive numbers decreasing by 1: –2, –3, –4, –5, –6 → 6–6=0.
Q23. Find the missing number: 7, 14, 21, 28, ?, 42
(a) 30
(b) 32
(c) 35
(d) 38
Answer: (c)
Explanation: Add 7 each time → 28+7=35.
Q24. Identify the next term: 1, 4, 9, 16, 25, 36, ?
(a) 40
(b) 42
(c) 49
(d) 56
Answer: (c) Explanation: Perfect squares → 7²=49.
Q25. What number should replace the question mark? 2, 4, 8, 16, 32, ?, 128
(a) 48
(b) 64
(c) 80 (d) 96
Answer: (b)
Explanation: Each term doubles → 32×2=64.
