A sales representative plans to visit each of six companies-M, N, P, R, and S-exactly once during the course of one day. She is setting up her schedule for the day according to the following conditions:

    She must visit M before N and before R

    She must visit N before Q.

    The third company she visits must be P.

    1. Which of the following could be the order in which the sales representative visits the six companies?

    (A) M, R, N, Q, P, S

    (B) M, S, P, N, R, Q

    (C) P, R, M, N, Q, S

    (D) P, S, M, R, Q, N

    (E) Q, N, P, R, S, M

    2. Which of the following must be true of the sales representative's schedule for the day?

    (A) She visits M before Q.

    (B) She visits N before R.

    (C) She visits P before M.

    (D) She visits P before S.

    (E) She visits Q before R.

    3. If the sales representative visits S first, which company must she visit second?

    (A) M

    (B) N

    (C) P

    (D) Q

    (E) R

    4. Which of the following could be true of the sales representative's schedule?

    (A) She visits M third.

    (B) She visits N sixth.

    (C) She visits P first.

    (D) She visits Q second.

    (E) She visits R sixth.

    5. If the sales representative visits Q immediately before R and immediately after S, she must visit Q

    (A) first

    (B) second

    (C) fourth

    (D) fifth

    (E) sixth

    6. If the sales representative visits S sixth, which of the following could be her first and second visits, respectively?

    (A) M and Q

    (B) M and R

    (C) N and M

    (D) Q and P

    (E) Q and R

    7. The sales representative could visit any of the following companies immediately after P EXCEPT

    (A) M

    (B) N

    (C) Q

    (D) R

    (E) S