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First digit can be one of four, second can be one of the remaining three etc

so 4 x 3 x 2 x 1 = 24 combinations. This is known as factorial 4 (or 4 factorial) and is symbolised as "4!".

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15y ago

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Related Questions

How many 4 number combinations are possible with 12345 without repeating?

There are only five combinations: 1234, 1235, 1245, 1345 and 2345.


How many two digit number combinations can you get using the number 1234 without repeating a digit?

There are twelve possible solutions using the rule you stated.


How many four digit numbers can be formed out of 1234 without repeating any of the digits in the same number?

256


How many 3 number combinations are possible with 1234?

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It is 1234/9999.


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By the uniqueness of numbers, the only number for 1234 is 1234 itself.


Is 1234 a prime number?

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List of all 4 digit combintions without repeating using only numbers 0-9?

Oh, dude, you wanna list out all the 4-digit combinations without repeating digits from 0 to 9? That's like 10 choose 4, which is 10! / (4!(10-4)!), which equals 210. So, there are 210 unique 4-digit combinations you can make using numbers 0 to 9 without repeating any digits. Cool, right?