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Sync settings

Choose what your account keeps in step on every device where you are signed in.

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    Always synced: the tools on your board, their order and size.

  • The windows open on your start page, including what you typed in them.

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  • Keeps your pipeline and saved recipes on all your devices. Your files are never synced – only the steps and settings.

Turning something off removes it from your account straight away. Your devices keep their own copy.

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Your choice is stored in this browser only. Notifications never show personal content such as a message or a number. They work while a Synsi tab is open; closed tabs get none.

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Permutation Calculator (nPr)

Find how many ordered arrangements can be made by selecting r items from n.

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Result

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Results are mathematical estimates. Statistical calculations depend on the entered data and assumptions; they do not establish causation or replace expert review.

Runs in your browser – your data never leaves your device Also available via our free API

How to use the Permutation Calculator

  1. 1 Enter the numbers or data requested.
  2. 2 Choose the calculation option when available.
  3. 3 Review the result and its assumptions.

Permutations when order matters

Use nPr = n! / (n − r)!. For example, arranging 3 of 10 distinct items gives 10 × 9 × 8 = 720 possible orders. Use the calculator to change n and r.

When to use permutations

Choose permutations when swapping selected items creates a different outcome, such as assigning first, second and third place. If order does not matter, use combinations instead.

Frequently asked questions

What is the permutation formula?

nPr = n! / (n − r)!, where n is the number of available items and r is the number selected.

When does order matter?

Order matters when rearranging the same selected items produces a different outcome.

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