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Statistics Calculator

Permutations, Combinations, Factorials & More.

Permutation (nPr)

Order MATTERS. (e.g., Code for a lock).
"1-2-3" is DIFFERENT from "3-2-1".

Formula: n! / (n-r)!

Statistics Concepts Explained

Solve common probability and combinatorics problems without confusion. Understand the difference between Permutations and Combinations instantly.

Permutations (nPr)

Calculates the number of ways to arrange items where order matters (e.g., a lock code).

Combinations (nCr)

Calculates the number of ways to choose items where order does not matter (e.g., lottery numbers).

Factorials (!)

Compute factorials used in advanced probability. 5! = 5 × 4 × 3 × 2 × 1 = 120.

Why choose UnitMaster?

  • Verify probability homework.
  • Calculate lottery odds.
  • Understand data grouping.
  • Offline & Private.

Frequently Asked Questions

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Processing ModeOffline Ready
Client-Side (WASM)

Calculations happen locally. No data sent to servers.

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Statistics Calculator - Permutations, Combinations & Probability | UnitMaster - Offline Developer Tools