# Statistics Examples

Find the number of possible unordered combinations when items are selected from available items.

Fill in the known values.

Subtract from .

Rewrite as .

Reduce the expression by cancelling the common factors.

Reduce the expression by cancelling the common factors.

Cancel the common factor.

Rewrite the expression.

Multiply by .

Simplify the denominator.

Expand to .

Multiply by .

Divide by .