7 Permute 2 — What is 7P2?
7P2 equals 42, the number of ordered pairs that can be formed from 7 distinct items.
How to use this tool
- Enter n (total items) and r (items chosen) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your npr and the full breakdown beneath it.
Use this calculator to find 7P2 — the count of all ordered 2-item sequences from a set of 7.
Frequently asked questions
- What is a permutation?
- A permutation is an ordered arrangement. nPr = n!/(n-r)!. For example, P(5,2) = 5×4 = 20 ordered pairs from 5 items.