A team of 3 is to be chosen from 6 students, P, Q, R, S, T and U, under these conditions:
1. Exactly one of U and Q is selected.
2. Exactly one of R and S is selected.
3. Q and S cannot both be selected.
Which of the following could be the team?
Solution
PRU meets every condition.
PST breaks condition 1.
RST breaks condition 1, 2.
PQU breaks condition 1, 2.
