Three students bring identical umbrellas to class and leave them in a pile by the door. When they leave, they each just grab a random umbrella.
What is the probability that no one gets their original umbrella?
- Ian HLv 72 months agoFavorite Answer
Let a, b, c be the correct umbrellas for the people below. Options are
A B C
a, b, c
a, c, b
b, a, c no one has correct umbrella
b, c, a no one has correct umbrella
c, a, b,
c, b, a
Probability = 1/3
- 2 months ago
There are 6 combinations total, and out of those 2 have each student picking up a different umbrella than carried in