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All the numbers from 0 to 999 so 1000 numbers
However if you mean only using each number once the answer is about 720
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No. The above answer refers to the number of permutations. Permutations are NOT the same as combinations as anyone who has studies any probability theory can tell you.
The number of combinations is 9C3 = 9*8*7/3*2*1 = 84
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How many four digit combinations can be made from the number nine example 1 2 3 39?
How many four digit combinations can be made from the number nine? Example, 1+1+2+5=9.
How many 4 digit combinations can be made using numbers 1 2 3 4 6?
120 combinations using each digit once per combination. There are 625 combinations if you can repeat the digits.
How many 5 digit combinations are in 12345?
Just 1.
How many 5 digit combinations are there for 1-59?
Any 5 from 59 = 5006386
How many possible combinations of a 7-digit number?
If the same 7 digits are used for all the combinations then n! = 7! = 7*6*5*4*3*2*1 = 5040 combinations There are 9,999,999-1,000,000+1=9,000,000 7-digit numbers.
