Finite Math Examples

${}_{2}P_{2}$

Step 1

Evaluate

${}_{2}P_{2}$ using the formula

${}_{n}P_{r} = \frac{n!}{(n - r)!}$ .

$\frac{2!}{(2 - 2)!}$

Step 2

Subtract

$2$ from

$2$ .

$\frac{2!}{(0)!}$

Step 3

Simplify

$\frac{2!}{(0)!}$ .

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Step 3.1

Simplify the numerator.

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Step 3.1.1

Expand

$2!$ to

$2 \cdot 1$ .

$\frac{2 \cdot 1}{(0)!}$

Step 3.1.2

Multiply

$2$ by

$1$ .

$\frac{2}{(0)!}$

$\frac{2}{(0)!}$

Step 3.2

Expand

$(0)!$ to

$1$ .

$\frac{2}{1}$

Step 3.3

Divide

$2$ by

$1$ .

$2$

$2$

Enter a problem...

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$