Reasoning

Correct answer: D

I is correct: 100,96,88,76,... subtracting 4,8,12,... → 60. The next subtraction is 16. II is incorrect: 1,8,27,64,... as consecutive cubes → 125. The next term is 5³.

Correct answer: D

I is correct: A race has no ties. Arun finishes ahead of Bina, Bina ahead of Charu, and Deepa behind Charu; the winner among them → Arun. The finish order is Arun-Bina-Charu-Deepa. II is incorrect: Five books are left-to-right A,C,E,B,D; the new leftmost after swapping A and B → B. B moves from fourth to first.

Correct answer: A

Total=9+12−1.

Correct answer: D

I is incorrect: Six candidates ordered F,A,D,B,E,C; D's rank from the end → 4th. D is third from the start, so sixth-minus-third-plus-one is fourth. II is correct: Scores satisfy p>q, r>p and s<q; the second lowest variable → q. Ascending order is s,q,p,r.

Correct answer: C

Bottom rank=24−7+1=18.

Correct answer: B

I is incorrect: L arrives before M but after K, and N arrives after M; the earliest → K. The forced order is K-L-M-N. II is correct: Five books are left-to-right A,C,E,B,D; the middle book → E. The third of five positions is the middle.

Correct answer: A

I is incorrect: Six candidates ordered F,A,D,B,E,C; the first after moving C to the front → C. Moving the last candidate to the front places C first. II is incorrect: P is immediately before Q, Q immediately before R, and S is before P; the last of these four → R. The only order is S-P-Q-R.

Correct answer: C

The finish order is Arun-Bina-Charu-Deepa.

Correct answer: A

I is incorrect: A pupil is ninth from the front and twelfth from the back; total queue size → 20. Total=9+12−1. II is incorrect: Five books are left-to-right A,C,E,B,D; the new leftmost after swapping A and B → B. B moves from fourth to first.

Correct answer: C

The age order is W-T-U-V.

Correct answer: D

I is incorrect: Rina ranks seventh from the top among 24 students; her rank from the bottom → 18th. Bottom rank=24−7+1=18. II is incorrect: Five books are left-to-right A,C,E,B,D; the number of books between A and D → 3. C,E and B lie between the end books.

Correct answer: C

Moving the last candidate to the front places C first.

Correct answer: A

I is correct: Five books are left-to-right A,C,E,B,D; the book immediately right of E → B. B occupies the next position after E. II is correct: Scores satisfy p>q, r>p and s<q; the second lowest variable → q. Ascending order is s,q,p,r.

Correct answer: C

I is incorrect: Six candidates ordered F,A,D,B,E,C; the candidate between B and C → E. The last three are B-E-C. II is incorrect: A pupil is ninth from the front and twelfth from the back; total queue size → 20. Total=9+12−1.

Correct answer: B

The forced order is K-L-M-N.

Correct answer: A

I is incorrect: Five books are left-to-right A,C,E,B,D; the book immediately right of E → B. B occupies the next position after E. II is correct: M is taller than N, N taller than O, and P taller than M; the shortest → O. The order from tallest is P-M-N-O.

Correct answer: C

Removing the first candidate shifts A into first place.

Correct answer: A

I is correct: L arrives before M but after K, and N arrives after M; the earliest → K. The forced order is K-L-M-N. II is incorrect: A pupil is ninth from the front and twelfth from the back; total queue size → 20. Total=9+12−1.

Correct answer: C

The constraints force the order A-B-C-D.

Correct answer: D

I is incorrect: Six candidates ordered F,A,D,B,E,C; A's new rank after F leaves → 1st. Removing the first candidate shifts A into first place. II is incorrect: Scores satisfy p>q, r>p and s<q; the second lowest variable → q. Ascending order is s,q,p,r.

Correct answer: C

The third of five positions is the middle.

Correct answer: A

I is incorrect: Six candidates ordered F,A,D,B,E,C; the candidate between B and C → E. The last three are B-E-C. II is correct: Six candidates ordered F,A,D,B,E,C; D's rank from the end → 4th. D is third from the start, so sixth-minus-third-plus-one is fourth.

Correct answer: D

The only order is S-P-Q-R.

Correct answer: C

I is correct: A pupil is ninth from the front and twelfth from the back; total queue size → 20. Total=9+12−1. II is incorrect: Six candidates ordered F,A,D,B,E,C; the first after moving C to the front → C. Moving the last candidate to the front places C first.

Correct answer: A

Ascending order is s,q,p,r.