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How many different combinations of 3 can be made from the digits of 0-9 if no digits are repeated?
Wiki User
∙ 11y ago
If the sequence of the digits is important ... 1-2-3 and 3-2-1 are different ...
then there are 10*9*8 = 720 of them.
If the sequence doesn't matter ... 1-2-3 and 2-3-1 and 3-1-2 are all the same ...
then there are only 720/6 = 120 because 3 things can be ordered 1*2*3 = 6 ways.
Wiki User
∙ 11y ago
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How many combinations of three digits can be made from the numbers 123?
6
How many combinations of numbers can be made of 3 numbers if the numbers can be repeated?
10 to the third assuming zero is included and can lead, otherwise 9 to the third, ie 729. This all assumes that you are talking about 3-digit numbers. * * * * * No. That may be the number of permutations but those are different from combinations. In a combiation, the order of the digits does not matter so that 123 is the same as 132 or 213 etc. With repetition, there are 210 COMBINATIONS, including one that is {0,0,0}.
How many 2 digit combinations can be made with 2 digits?
Only one.
How many 3 digits combinations can be made from 1234567890?
The answer is 10C3 = 10*9*8/(3*2*1) = 120 combinations.
How many combinations of four digits can be made from the numbers 1-9?
10
How many 4 digit combinations can be made from 6 digits?
If the 6 digits can be repeated, there are 1296 different combinations. If you cannot repeat digits in the combination there are 360 different combinations. * * * * * No. That is the number of PERMUTATIONS, not COMBINATIONS. If you have 6 different digits, you can make only 15 4-digit combinations from them.
If using the numbers 1 through 9 how many different 3 digit combinations can be made?
If you allow digits to be repeated (for example, 222 or 992), then there are 9 x 9 x 9 = 729 combinations. If you do not allow digits to be repeated, then there are 9 x 8 x 7 = 504 combinations.
How many 4 digit combinations can be made with 5 digits?
If no digit can be repeated then there are 5 combinations, abcd, abce, abde, acde and bcde. If you regard abdc as different from abcd then each of the 5 basic sets could be arranged 24 ways and the total would be 120 combinations.
How many number combinations can be made with numbers 0-9?
9
How many combinations of four digits can be made from 1-44?
45
How many combinations can be made with 4 digits?
10,000.
How many combinations can be made out of seven digits?
5040, assuming none of the digits are the same. (Assuming they're not, there's 5040 unique combinations you can make out of 7 digits).
How many four digits codes can be made from 0123456789?
104 = 10000 if digits can be repeated, 5040 if not. The above answers assume a code can start with a 0. If not, 9000 if digits can be repeated and 4536 if not.
How many 2 digit combinations can be made from 0 to 9 digits?
45 In combinations, the order of the digits does not matter so that 12 and 21 are considered the same.
How many combinations of three digits can be made from the numbers 123?
6
How many combinations of numbers can be made of 3 numbers if the numbers can be repeated?
10 to the third assuming zero is included and can lead, otherwise 9 to the third, ie 729. This all assumes that you are talking about 3-digit numbers. * * * * * No. That may be the number of permutations but those are different from combinations. In a combiation, the order of the digits does not matter so that 123 is the same as 132 or 213 etc. With repetition, there are 210 COMBINATIONS, including one that is {0,0,0}.
How many 2 digit combinations can be made with 2 digits?
Only one.
