Nanette must pass through three doors as she walks from her company's foyer to her office. Each of these doors may be locked or unlocked.
Let B be the event that exactly two doors are in the same condition. List the outcomes
Of B. [Let "L" designate "locked" and U" designate "unlocked".]
A) {LLU, LUL, ULL}
B) {LLU, LUL, ULL, LUU, ULU, UUL}
C) {LLL, LLU, LUL, LUU, ULL, ULU, UUL, UUU}
D) None of these.

Question

Quizplus · Accepted Answer

B) {LLU, LUL, ULL, LUU, ULU, UUL} correctly lists all the outcomes where exactly two doors are in the same condition, either locked or unlocked.

Nanette Must Pass Through Three Doors as She Walks from Her