Q1: Find the missing number in the series:
2, 3, 5, 7, 11, ?
Answer: A
Prime numbers: Next is 13.
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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.
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Q41: Find the missing number in the series:
3, 6, 11, 18, 27, ?
Answer: A
Differences: +3, +5, +7, +9... next is +11 → 27+11 = 38.
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Q57: Find the missing number in the series:
2, 3, 5, 7, 11, ?
Answer: A
Prime numbers: Next is 13.
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Q33: Find the missing number in the series:
3, 6, 11, 18, 27, ?
Answer: A
Differences: +3, +5, +7, +9... next is +11 → 27+11 = 38.
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Q17: Find the missing number in the series:
10, 7, 4, 1, ?
Answer: A
Each term decreases by 3. Next: 1 - 3 = -2.
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Q65: Find the missing number in the series:
2, 3, 5, 7, 11, ?
Answer: A
Prime numbers: Next is 13.
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Q25: Find the missing number in the series:
2, 4, 6, 8, ?
Answer: A
Simple arithmetic progression: +2 each time. So next is 10.
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Q9: Find the missing number in the series:
0, 1, 1, 2, 3, 5, ?
Answer: A
Fibonacci series: next number is sum of previous two: 3+5=8.
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Q73: Find the missing number in the series:
1, 4, 9, 16, 25, ?
Answer: A
These are squares of natural numbers: 1², 2², 3²... next is 6² = 36.
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