Can I multiply more than two numbers?

Yes. Enter numbers separated by spaces or new lines; the tool multiplies all of them.

Decimals and negative numbers are supported.

What if I enter non-numeric text?

Non-numeric tokens are ignored; only valid numbers are multiplied.

Multiply two or more numbers. Enter numbers separated by spaces or one per line.

Numbers (space or newline separated)

Can I multiply more than two numbers?: Yes. Enter numbers separated by spaces or new lines; the tool multiplies all of them.
What about decimals?: Decimals and negative numbers are supported.
What if I enter non-numeric text?: Non-numeric tokens are ignored; only valid numbers are multiplied.

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Calculate C(n,r) — the number of ways to choose r items from n without order. Uses n!/(r!(n-r)!).

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Count how many permutations of n objects are even (expressible as an even number of swaps). For n ≥ 2, equals n!/2.