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The question is incorrect since there are 210 - 1 possible combinations.

The digit 0 can be in the combination or out. That gives 2 ways.

With each, the digit 1 can be in the combination or out - 2*2 = 22 ways.

With each, the digit 2 can be in the combination or out = 23 ways.

With each, the digit 3 can be in the combination or out = 24 ways.

etc.

So 210 ways in all except that one of them is the null combination.

Now 210 = 1024 so there are only 1023 combinations.

If, instead, you allow the digits to be used many times, there is no limit to the number of combinations.

Q: What are the 100000 number combinations you can make using 0 - 9?

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137, 173, 317, 371, 713, 731 Six combinations can be made.

Using the combination fuction, chose three numbers from 45 numbers. The answer is 14,190.

In a 7 segment display, the symbols can be created using a selected number of segments where each segment is treated as a different element.When 1 segment is used, the possible positions are 7because it can be any of the 7 segments (7C1=7).When 2 segments are used, the number of possible combinations are 7C2=21.When 3 segments are used, the number of possible combinations are 7C3=35When 4 segments are used, the number of possible combinations are 7C4=35When 5 segments are used, the number of possible combinations are 7C5=21When 6 segments are used, the number of possible combinations are 7C6=7When 7 segments are used, the number of possible combinations are 7C7=1Adding the combinations, 7+21+35+21+7+1=127Therefore, 127 symbols can be made using a 7 segment display!

Precisely 1. For ANY number n, the number of combinations of n of those items is always 1.

14 * * * * * Wrong! There are 15. 4 combinations of 1 number, 6 combinations of 2 number, 4 combinations of 3 numbers, and 1 combination of 4 numbers.

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Assuming you are using the standard English alphabet, the number of combinations you can make are: 26 x 26 = 676 combinations.

9

137, 173, 317, 371, 713, 731 Six combinations can be made.

Using the combination fuction, chose three numbers from 45 numbers. The answer is 14,190.

You can make 5 combinations of 1 number, 10 combinations of 2 numbers, 10 combinations of 3 numbers, 5 combinations of 4 numbers, and 1 combinations of 5 number. 31 in all.

Their is 25 combinations

In a 7 segment display, the symbols can be created using a selected number of segments where each segment is treated as a different element.When 1 segment is used, the possible positions are 7because it can be any of the 7 segments (7C1=7).When 2 segments are used, the number of possible combinations are 7C2=21.When 3 segments are used, the number of possible combinations are 7C3=35When 4 segments are used, the number of possible combinations are 7C4=35When 5 segments are used, the number of possible combinations are 7C5=21When 6 segments are used, the number of possible combinations are 7C6=7When 7 segments are used, the number of possible combinations are 7C7=1Adding the combinations, 7+21+35+21+7+1=127Therefore, 127 symbols can be made using a 7 segment display!

Assuming that the only permitted operation is addition, then there are 4 combinations.

Well are you trying to make a certien number ?

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).

Precisely 1. For ANY number n, the number of combinations of n of those items is always 1.

Yuo can make only one combination of 30 digits using 30 digits.