What is Falling and rising factorials?
The '''falling factorial''' <math>(n)_k</math> is a [[multiplication]] of progressively smaller [[Term (mathematics)|terms]] starting with n where there are k number of terms. Each term is a [[natural number]] and decreases by 1. Similarly the '''rising factorial''' <math>n^{(k)}</math>is a multiplication of progressively larger terms starting with n where there are k number of terms. Each term is a natural number and increases by 1. [[Category:Mathematics]]