How many digit numbers can be formed if:

  1   2   3   4   5   6   7   8   9   

How does the Digit Problems Calculator work?
Free Digit Problems Calculator - Determines how many (n) digit numbers can be formed based on a variety of criteria.
This calculator has 1 input.

What 2 formulas are used for the Digit Problems Calculator?

With no restrictions, then 10n
With restrictions, then n * (n - 1) * (n - 2) up to n multiplications

For more math formulas, check out our Formula Dossier
What 3 concepts are covered in the Digit Problems Calculator?
a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter
nPr = n!/r!(n - r)!
Any of the numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) used to construct a number
digit problems
math problems involving variables for each place value, h for hundreds, t for tens, and o for ones as an example

Digit Problems Calculator Video