Probability

Finds the factorial product of a number. Press a number, then the Factorial key, then Enter.

Generates a random number between 0 and 1. Pressing Rand displays "rand()". Press Enter to see the random number.

Generates a random integer between two given numbers. For example, to generate a random integer between 80 and 100:

• Press randInt. This displays "randInt(".
• Press the first number, a comma, and the second number, followed by the right parenthesis. Press Enter.

Finds the number of different ways r out of n items can be arranged.
For example, to find the number of possible arrangements for 3 out of 5 items:

• Press the nPr key. This displays "nPr(".
• Press 5, a comma, then 3 and a right parenthesis.
• Press Enter.

Finds the number of different ways to choose r out of n items.
For example, to find how many different ways you can choose 6 items out of 14:

• Press the nCr key. The display shows "nCr(".
• Press 14, a comma, then 6 and a right parenthesis.
• Press Enter.