Q:

What is the different between nCr and nPr?

A:

Quick Answer

A person uses nPr when the order matters, and they use nCr when order does not matter or for combinations. Someone would use these functions when performing probability math problems.

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Full Answer

Probability math looks at the likelihood of something happening. Not all events have a predictable outcome, so someone uses probability to essentially predict the outcome. For example, if someone flips a coin, when the coin lands it will either be on the tails side or the heads side. Since there are only two sides of a coin, there is a 50 percent probability that the coin lands on heads, or a 50 percent probability that it lands on tails.

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