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3! = 1 x 2 x 3 = 6. The same for any three different digits - you have 6 possible combinations.
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NO! That is the number of permutations! In a combination the order of the numbers does not matter, so there is only one combination 123. And that is the same as 132, or 312 or ...
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3 digit number with 3 different digits?
123
How many four digit numbers can be formed out of 123 if a digit can be repeated?
There are 3 values (1, 2, 3) for each of the 4 digits. Therefore, there are 3*3*3*3 or 81 four digit numbers that can be formed.
How many different 9 digit combination can be made using numbers zero through nine?
Just think of how many possibilities you have for each digit. 10x9x8x7x6x5x4x3x2 or 10 factorial is 3 628 800.
How many 3 digit number can be using 123?
You can make six different combinations: 123 132 213 231 321 312. If you just need to know the number of combinations, you could find the answer without writing everything out by letting x represent the number of digits and calculating x*(x-1).
How many 3-digit numbers can made using the digits 2 3 4?
If you can repeat a digit, there are 27. If you can't repeat a digit, there are only 6.
How many 3 digit numbers can be formed from the digits 123?
Just 6: 123 132 213 231 312 321
How many 3 digit numbers can be made using 3 2 1?
321 312 213 231 123 132 6 3 digit numbers.
3 digit number with 3 different digits?
123
What is a 3 digit whole number whose digit product equals the digit sum?
123
How many four digit numbers can be formed out of 123 if a digit can be repeated?
There are 3 values (1, 2, 3) for each of the 4 digits. Therefore, there are 3*3*3*3 or 81 four digit numbers that can be formed.
What the first digit of the number 123?
1 as in 100 2 as in 20 3 as in 3
How many 6 digit combinations from a 49 digit universe will contain a particular 3 digit combination?
There are 15180 combinations.
Three digit number whose digit product equals the digit sum?
1+2+3=6 1x2x3=6 123
How many different 3 digit numbers can be made from the digits 1 2 3?
Six. 321 312 231 213 123 132
How many 3 - digit numbers can be formed using the digit 1 2 3?
123 132 231 213 321 312 : 6 [if no repeated digits]. If repetition is allowed [such as 111, or 223], then there are 27 possibilities.
Can you add 3 3 digit numbers and come up with a 4 digit answer with all different digits?
Sure 123 932 910 the sum is 1965
What is the different between the largest4 digit number without repetition and the smallest 3 digit number without repetition?
9876 - 123= 9753
