6 calculators in this category
- Arithmetic Sequence CalculatorGive this calculator a first term and either the common difference or any other term of the sequence, and it returns the nth…
- Geometric Sequence CalculatorGeometric progression, aₙ = a₁rⁿ⁻¹A geometric sequence multiplies by the same number every step. Give this calculator the first term and either the common ratio…
- Fibonacci Sequence CalculatorBinet's closed formEnter a term index and this calculator returns that Fibonacci number, the term immediately after it, the running sum of every…
- Factorial Calculator (n!)Gamma function; Legendre's formula for trailing zerosThe factorial of a whole number n , written n! , is the product of every whole number from 1 up to n . It counts the ways to…
- Permutation Calculator (nPr)Permutations, arrangements of a multisetA permutation counts ordered arrangements. Gold, silver and bronze from eight runners is a permutation; a three-person…
- Combination Calculator (nCr)Binomial coefficient (Pascal's rule)A combination counts how many different unordered selections of r items you can make from n distinct items. Choosing Ann, Ben…
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