There are 12 slips with the numbers 1 through 12 written on them. Each number is mentioned only once. What is the probability of getting the number 6 on the slip if a slip is picked randomly?

The probability of an event is given by:

Probability of an event = $\frac{\mathrm{Outcomes} \mathrm{of} \mathrm{an} \mathrm{event}}{\mathrm{Total} \mathrm{possible} \mathrm{outcomes}}$

There is a total of 12 slips. Therefore, the total possible outcomes are 12. The number 6 is written only once. Therefore, the possible outcome of getting the number 6 on the slip is 1.

$\therefore$Probability of getting 6: $=\frac{1}{12}$