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How many different codes of 4 digits are possible if the first digit must be 3 4 or 5 and if the code may not end in 0?
Wiki User
∙ 11y ago
3x10x10x10x9=2700
Wiki User
∙ 11y ago
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Students used to have four-digit ID codes now ID codes consist of five digits and 1 letter how many more ID codes are there now than there used to be?
For a four-digit ID code, you would have 10x10x10x10, so 10000 different codes. With a five-digit and one letter ID code, you have 10x10x10x10x10x26 or 2,600,000 different codes. So there are 2,600,000-10,000 more, or 2,590,000 more codes.
What is the highest 7 digit number with 3 different digits?
> 9999876 Actually, 9999876 has four different digits (6, 7, 8, 9). The largest 7-digit number with three different digits is 9999987.
What is the smallest 6 digit number using the digits 12345?
Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.
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.
3 digit number with 3 different digits?
123
How many different 4-digit codes are possible if the digits cannot be repeated?
If you include 0000, ten thousand unique four digit codes are possible.
How many different 5-digit zip codes are possible if no digits are repeated?
10*9*8*7*6=30,240
How many different 5 digit zip codes are possible if digits are allowed to repeated?
As far as I can tell, all 5 digit numbers are potential zip codes, so there are 99999 + 1 potential zip codes, or 100,000. Many of these are not actually is use.
How many different 4-digit codes are possible if the last digit has to be zero?
There can be 103 = 1000 codes.
How many possible 4 digit combinations are there using 0-9. how many different combination codes are possible?
There are 210 4 digit combinations and 5040 different 4 digit codes.
How many 3-digit codes using the digits 0-9 are possible if repetition are allowed?
1000
What is the largest possible 4 digit number that has four different digits?
9,876
How many 3-digit codes using digits 0 through 9 are possible if repetitions are allowed?
10,000
What is the largest possible 4 digit number that has four different digits what is the number?
9876 (:
How many different 3-digit numbers less than 500 can be made using the digits 345 and 6 if the digits can be only used only once?
There are 2 possible digits for the first digit (3 or 4), leaving 3 possible digits for the second digit (5 and 6 and whichever was not chosen for the first), leaving 2 possible digits for the third. Thus there are 2 × 3 × 2 = 12 possible 3 digit numbers.
How many 6 digit license plate codes are possible without repeating any digits?
10!/(10-6)! =10!/4! = 10*9*8*7*6*5 = 151200 different codes
How many 3 digit codes using the digits 0 9 are possible if repetitions are allowed?
900 ,999 ,909
