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How do you calculate all possible combinations of 6 numbers and letters?

Asked by DrewJ (436points) May 10th, 2011

I need to know how one would go about calculated how many different combinations of 6 characters can be created using numbers 0–9 and letters a-z

Example: 123abc, be84mg, 4920gh, 94mfh1,995ggb

There is no rule to how many of the characters have to be numbers or letters. Also, numbers and letters can be used multiple times in each combination there can even be combinations that read, “666666” or “cccccc.”

Is there an equation for this?

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