AFCAT Reasoning & Logical Thinking 3 — Questions and Answers
Question 1: Which number should replace '?' in the series: 2, 6, 12, 20, 30, ?
- 40
- 42 (Correct answer)
- 44
- 46
Correct answer: 42
The pattern is n(n+1): 1×2, 2×3, 3×4, 4×5, 5×6, so next is 6×7 = 42.
Question 2: Statement: All pilots are trained. Some trainees are disciplined. Conclusion I: Some pilots are disciplined. Conclusion II: All trainees are pilots. Which is valid?
- Only I follows
- Only II follows
- Both follow
- Neither follows (Correct answer)
Correct answer: Neither follows
Neither follows: the link between trainees and discipline doesn't extend to pilots, and reversing 'all pilots are trained' is invalid.
Question 3: A man walks 5 km North, then turns East and walks 12 km. How far is he from the starting point?
- 13 km (Correct answer)
- 17 km
- 7 km
- 15 km
Correct answer: 13 km
Using the Pythagorean theorem: √(5² + 12²) = √169 = 13 km.
Question 4: If the day before yesterday was Thursday, what day will it be the day after tomorrow?
- Monday (Correct answer)
- Tuesday
- Sunday
- Wednesday
Correct answer: Monday
Day before yesterday = Thursday means today = Saturday; day after tomorrow = Monday.
Question 5: Which Venn diagram best represents: Mammals, Whales, Marine Animals?
- All three separate circles
- Whales inside Mammals only
- Whales inside the intersection of Mammals and Marine Animals (Correct answer)
- Mammals inside Marine Animals
Correct answer: Whales inside the intersection of Mammals and Marine Animals
Whales are simultaneously mammals and marine animals, so the Whales circle lies inside the overlap of the other two.
Question 6: What is the next term in the series: AZ, BY, CX, DW, ?
- EV (Correct answer)
- EU
- FV
- EW
Correct answer: EV
First letters advance (A,B,C,D,E) and second letters retreat (Z,Y,X,W,V), giving EV.
Question 7: A sequence follows: B, E, H, K, N, ?
- O
- P
- Q (Correct answer)
- R
Correct answer: Q
Each letter is 3 positions ahead of the previous: N + 3 positions = Q.
AFCAT Reasoning & Logical Thinking 3
Which number should replace '?' in the series: 2, 6, 12, 20, 30, ?