Press to view the Probability menu.

Press to select

`rand`

to generate a random number between 0 and 1, inclusive.Press to select nPr which finds the number of permutations of n things taken r at a time.

Press to select nCr which finds the number of combinations of n things taken r at a time.

Press to select ! (factorial) which finds n!.

Press to select

`randInt`

to generate a random integer.Press to select

`randNorm`

to generate a random number from a normal distribution. Press to select

`randBin`

to generate a random number from a binary distribution.