### Home > INT2 > Chapter 3 > Lesson 3.1.2 > Problem3-18

3-18.

Augustin is in line to choose a new locker at school. The locker coordinator has each student reach into a bin and pull out a locker number. There is one locker at the school that all the kids dread! This locker, # $831$, is supposed to be haunted, and anyone who has used it has had strange things happen to him or her! When it is Augustin’s turn to reach into the bin and select a locker number, he is very nervous. He knows that there are $535$ lockers left and locker # $831$ is one of them. What is the probability that Augustin reaches in and pulls out the dreaded locker # $831$? Should he be worried? Explain.

Use formula: $\frac{\text{Number of haunted lockers}}{\text{Total number of lockers left to be picked}}$

$\frac{1}{535}\approx0.0019$

No, because his probability of choosing the dreaded locker is less than $1\%$.