Fibonacci sequence: Each number is sum of previous two. 8+13=21
Q.8Medium
Rahul starts from point A, walks 5 km North, then turns right and walks 3 km, then turns left and walks 4 km. Finally, he turns right and walks 2 km. In which direction is he facing now?
Answer: A
After tracking movements: North 5km, East 3km, North 4km, East 2km. Final direction is East.
Q.9Medium
If MOTHER is coded as KRIMEV, how is FATHER coded?
Answer: A
Each letter shifts backward by 2 positions: M→K, O→M, T→R, H→F, E→C, R→P. Applying same rule to FATHER: F→D, A→Y, T→R, H→F, E→C, R→P gives DYRFCP. Check: Pattern is -2 shift, so FATHER→DSVGEV.
Q.10Medium
All philosophers are thoughtful. Some thoughtful people are writers. Conclusion: Some philosophers are writers. Is this conclusion valid?
Answer: B
All philosophers are thoughtful, but only SOME thoughtful people are writers. We cannot conclude that some philosophers are writers without additional information.
Q.11Medium
In a code language, COMPUTER is written as RFMYOLSV. How is KEYBOARD written in the same code?
Answer: C
COMPUTER→RFMYOLSV uses reverse alphabet mapping (A↔Z, B↔Y, etc.). KEYBOARD using same rule gives DSVVBSYQ.
Q.12Medium
Pointing to a photograph, a man said, 'The father of this girl is the son of my mother.' How is the girl related to the man?
Answer: A
The son of my mother = myself. So the girl's father is the man. Therefore, the girl is his daughter.
Q.13Medium
Find the next term in the sequence: 4, 9, 25, 49, 121, ?
Answer: A
These are squares of prime numbers: 2²=4, 3²=9, 5²=25, 7²=49, 11²=121, 13²=169.
Q.14Medium
No reptiles are mammals. Some reptiles are dangerous. Conclusion: Some dangerous things are not mammals. Is this valid?
Answer: A
Since no reptiles are mammals, and some reptiles are dangerous, then some dangerous things (the dangerous reptiles) are not mammals. Valid conclusion.
Q.15Medium
All flowers are plants. Some plants are vegetables. Conclusion: Some flowers are vegetables. Valid or Invalid?
Answer: B
All flowers are plants, but only SOME plants are vegetables. We cannot conclude that some flowers are vegetables without knowing if flowers overlap with the vegetables category.
Q.16Medium
Six people A, B, C, D, E, F sit around a circular table facing inward. D is opposite to B. A is to the right of B. C is between A and F. E is between D and F. Who sits opposite to A?
Answer: C
Arranging clockwise: B, A, C, E, D, F. D opposite B (given). A right of B (given). C between A-F, E between D-F. C is opposite to A.
Q.17Medium
In a family, A is the brother of B. C is the mother of A. D is the brother of C. E is the father of D. How is E related to B?
Answer: A
C is mother of A, so C is mother of B. E is father of D, and D is brother of C, so E is father of C. Therefore, E is grandfather of B.
Q.18Medium
If COMPUTER is coded as DPNQVUFS (each letter shifted by 1 position in alphabet), how is TECHNOLOGY coded?
Answer: A
Each letter is shifted forward by 1: T→U, E→F, C→D, H→I, N→O, O→P, L→M, O→P, G→H, Y→Z. Result: UFDIOPHBHZ.
Q.19Medium
All dancers are performers. Some performers are artists. Which of the following must be true?
Answer: D
Dancers ⊂ Performers. Some Performers are Artists. This doesn't guarantee dancers are artists, but performers not being dancers is logically valid from the given premises.
Q.20Medium
In a seating arrangement, 5 people sit in a row. M is at one end. P is third from the left. Q is between M and P. R and S are the remaining people. If M is on the left, who is at the rightmost position?
Answer: D
M at position 1. P at position 3. Q at position 2 (between M and P). R and S at positions 4 and 5. Either could be rightmost.
