Q107: Find the missing number in the series:
2, 3, 5, 7, 11, ?
Answer: C
Prime numbers: Next is 13.
Enter details here
Q145: Find the missing number in the series:
2, 4, 6, 8, ?
Answer: A
Simple arithmetic progression: +2 each time. So next is 10.
Enter details here
Q28: Find the missing number in the series:
1, 8, 27, 64, ?
Answer: D
Cubes of 1, 2, 3, 4 → next is 5³ = 125.
Enter details here
Q1: Find the missing number in the series:
2, 3, 5, 7, 11, ?
Answer: A
Prime numbers: Next is 13.
Enter details here
Q26: Find the missing number in the series:
2, 6, 18, 54, ?
Answer: B
Each number is multiplied by 3: 2×3=6, 6×3=18, etc. → 54×3 = 162.
Enter details here
Q25: Find the missing number in the series:
2, 4, 6, 8, ?
Answer: A
Simple arithmetic progression: +2 each time. So next is 10.
Enter details here
Q98: Find the missing number in the series:
1, 8, 27, 64, ?
Answer: B
Cubes of 1, 2, 3, 4 → next is 5³ = 125.
Enter details here
Q91: Find the missing number in the series:
1, 4, 9, 16, 25, ?
Answer: C
These are squares of natural numbers: 1², 2², 3²... next is 6² = 36.
Enter details here
Q150: Find the missing number in the series:
3, 6, 11, 18, 27, ?
Answer: B
Differences: +3, +5, +7, +9... next is +11 → 27+11 = 38.
Enter details here
Q137: Find the missing number in the series:
10, 7, 4, 1, ?
Answer: A
Each term decreases by 3. Next: 1 - 3 = -2.
Enter details here