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There are 10,000 four number combinations in the numbers 0 through 9.

* * * * *

No, that is simply not true. The combination 1234 is the same as the combination 2134 and 2314 and 1423 etc.

So, there are just 8*7*6*5/(4*3*2*1) = 70 combinations.

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13y ago

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Q: How many 4 number combinations are there in the numbers 0 to 7?
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