The only combination that we can be absolutely certain makes 24 is '2' and '4'.
Any others depend on exactly how you plan to combine them arithmetically.
A 3-digit safe code can have combinations ranging from 000 to 999. This gives a total of 1,000 possible combinations, as each digit can be any number from 0 to 9. Therefore, the total number of combinations is 10 (choices for the first digit) × 10 (choices for the second digit) × 10 (choices for the third digit), which equals 1,000.
A 4-digit code using the digits 0-9 can have each digit independently chosen from 10 options (0 through 9). Since there are 4 digits, the total number of combinations is calculated as (10^4), which equals 10,000. Therefore, there are 10,000 possible combinations for a 4-digit code.
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To find the number of 3-digit combinations using the digits 0 to 9 with repetition allowed, we consider that each digit can be any of the 10 digits (0-9). Since there are 3 positions in the combination, the total number of combinations is calculated as (10 \times 10 \times 10), which equals 1,000. Therefore, there are 1,000 possible 3-digit combinations.
There are 15180 combinations.
A 3-digit safe code can have combinations ranging from 000 to 999. This gives a total of 1,000 possible combinations, as each digit can be any number from 0 to 9. Therefore, the total number of combinations is 10 (choices for the first digit) × 10 (choices for the second digit) × 10 (choices for the third digit), which equals 1,000.
A 4-digit code using the digits 0-9 can have each digit independently chosen from 10 options (0 through 9). Since there are 4 digits, the total number of combinations is calculated as (10^4), which equals 10,000. Therefore, there are 10,000 possible combinations for a 4-digit code.
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To find the number of 3-digit combinations using the digits 0 to 9 with repetition allowed, we consider that each digit can be any of the 10 digits (0-9). Since there are 3 positions in the combination, the total number of combinations is calculated as (10 \times 10 \times 10), which equals 1,000. Therefore, there are 1,000 possible 3-digit combinations.
There are 15180 combinations.
There are 12C4 4 NUMBER combinations. And that equals 12*11*10*9/(4/3/2/1) = 495 combinations. However, some of these, although 4 number combinations consist of 7 digits eg 1, 10, 11, and 12. Are you really sure you want 4-DIGIT combinations?
If the digits can repeat, then there are 256 possible combinations. If they can't repeat, then there are 24 possibilities.
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.
If you have 8 distinct numbers and want to create 8-digit combinations using each number exactly once, there are 8! (8 factorial) possible combinations. This is calculated as 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1, which equals 40,320. Therefore, you can make 40,320 unique 8-digit combinations with 8 distinct numbers.
To calculate the number of 4-digit combinations using the digits 1, 3, 5, and 7 exactly once each, we can use the permutation formula. There are 4 choices for the first digit, 3 choices for the second digit, 2 choices for the third digit, and 1 choice for the fourth digit. Therefore, the total number of combinations is 4 x 3 x 2 x 1 = 24. So, there are 24 possible 4-digit combinations using the digits 1, 3, 5, and 7 exactly once each.
This question needs clarificatioh. There are 4 one digit number combinations, 16 two digit combinations, ... 4 raised to the n power for n digit combinations.
Number of 7 digit combinations out of the 10 one-digit numbers = 120.