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# How many 3 digit codes are possible with out repeating a number using 0-9 only?

Updated: 12/17/2022

Wiki User

12y ago

10 x 9 x 8 = 720 different "permutations"

Wiki User

12y ago

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Q: How many 3 digit codes are possible with out repeating a number using 0-9 only?
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987654321

10234567

9,876,543

4321

### How many two digit number combinations can you get using the number 1234 without repeating a digit?

There are twelve possible solutions using the rule you stated.

### What is the place value of 5 in the smallest possible nine digit number without repeating?

The smallest possible 9 digit number (assuming negatives are not allowed) is 102,345,678 in which 5 is in the thousands' place.

### What is the least possible eight digit number without repeating any digit?

Assuming whole numbers and a leading zero does not count: 10,234,567

### What nine digit number is divisible by 11 and has no repeating digits?

There are many possible solutions. One such is 132486970

### How many possible 3 digit area codes can be created without repeating a number?

The number of 3-digit numbers with no repeated digits is simply 10x9x8 = 720, if you allow, for example, 012 as a 3-digit number. There are 10 digits, any of which might be the first digit. The second digit can be any digit except the digit that was used for the first digit, leaving 9 possibilities. The third digit then has 8 possibilities, since it can't be the same as the first or second digit. The actual number of possible area codes will be lower, because there are additional restrictions on the number combinations for a valid area code. For example, in North America (USA, Canada, etc.), the first digit of an area code cannot be 0 or 1 and the middle digit cannot be 9.

### What is the least possible 8-digits number without repeating any digit?

The least possible integer is -98765432. The least possible positive integer is 10234567.

### What is the largest number that can be formed with no odd digits repeating any digit and repeating any digit?

If you don't want any odd digit, and don't want to repeat a digit, start with the largest possible digit, in this case 8, and keep adding the largest digit every time, until you run out of possibilities: 86420.

98765432