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 C be the event that at least two doors are in the same condition. List the outcomes
Of C. [Let "L" designate "locked" and U" designate "unlocked".]
A) {LLL, LLU, LUL, LUU, ULL, ULU, UUL, UUU}
B) {LLL, UUU, LLU, LUL, ULL}
C) {LLU, LUL, ULL, LUU, ULU, UUL}
D) None of these.

Question

Quizplus · Accepted Answer

The event C includes outcomes where at least two doors are in the same condition, which means either two or all three doors are locked or unlocked.

Nanette Must Pass Through Three Doors as She Walks from Her