100 aptitude questions (Q1–Q100) Logical Reasoning Questions with Answers & Explanations.
Logical Reasoning Questions with Answers & Explanations . Series Completion (Number/Letter Series) Analogies Coding-Decoding Blood Relations Direction Sense Seating Arrangements Syllogisms Puzzles & Miscellaneous Logical Reasoning Q&A (Number & Letter Series) Q1. Find the missing term: 2, 6, 12, 20, 30, ? Solution: Differences: 4, 6, 8, 10 → next difference = 12. So next = 30 + 12 = 42. Answer: 42 . Q2. Find the next number: 3, 9, 27, 81, ? Solution: Each term ×3. Next = 81×3 = 243. Answer: 243 . Q3. Find missing term: 7, 14, 28, 56, ? Solution: Each term ×2. Next = 56×2 = 112. Answer: 112 . Q4. Series: 4, 16, 36, 64, ? Solution: Squares: 2²=4, 4²=16, 6²=36, 8²=64 → next 10²=100. Answer: 100 . Q5. Series: 1, 1, 2, 3, 5, 8, ? Solution: Fibonacci (sum of previous two). Next = 5+8 = 13. Answer: 13 . Q6. Find missing letter: A, C, F, J, O, ? So...