Logic - General Aptitude (GA) Previous Year Questions

In cooperatively breeding species, a single dominant female breeds while other subordinate adult females in the group rarely breed. Which of the following statements below are PROXIMATE explanations for this phenomenon?
(P) When resources are limited, and competition for reproduction is strong, females evolve costly traits to monopolize reproduction
(Q) Intense aggression by the dominant female towards subordinate females results in chronic stress, elevated stress hormone levels, and lowered rates of conception in subordinates
(R) When dispersal is costly, natural selection favours delayed dispersal of the young who instead help rear siblings, in return for continued residence on their natal territory
(S) Pregnant subordinate females are evicted from the group by the dominant female, and harsh conditions outside the group result in loss of body condition and increased risk of abortions

(A) P and Q    (B) P and R    (C) Q and S    (D) Q and R

Consider the following three statements:
(i) Some roses are red.
(ii) All red flowers fade quickly.
(iii) Some roses fade quickly.
Which of the following statements can be logically inferred from the above statements?

Some students were not involved in the strike.
If the above statement is true, which of the following conclusions is/are logically necessary?
1. Some who were involved in the strike were students.
2. No student was involved in the strike.
3. At least one student was involved in the strike.
4. Some who were not involved in the strike were students.

Seven cars P, Q, R, S, T, U and V are parked in a row not necessarily in that order. The cars T and U should be parked next to each other. The cars S and V also should be parked next to each other, whereas P and Q cannot be parked next to each other. Q and S must be parked next to each other. R is parked to the immediate right of V. T is parked to the left of U.
Based on the above statements, the only INCORRECT option given below is:

Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1^st round, 4^th student behind P leaves the game. After 2^nd round, 5^th student behind Q leaves the game. After 3^rd round, 3^rd student behind V leaves the game. After 4^th round, 4^th student behind U leaves the game. Who all are left in the game after the 4^th round?
Note: The figure shown is representative.

Given the statements:

• P is the sister of Q.
• Q is the husband of R.
• R is the mother of S.
• T is the husband of P.

Based on the above information, T is _________ of S.