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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
Maths Problem Banks issue customers with 4 digit Pin Code numbers however the PIN codes have to have a pair of repeated digits 0889 6647 but not 3453 or 4444 how many codes are there?
the repeated digits can lie in any of 3 positions:XXYZ,YXXZ, or YZXXTherefore, the number of different possible repeated digit combinations is 10×3=30 (there are 10 different possible digits).There are then 9 values left that Y could be, after the X's have their values, and 8 values left that Z could be, to ensure no unintended repeated numbers.This gives (10×3)×9×8=2160. There are therefore 2160 possible codes.
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 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.
A combination lock on a suitcase has 5 wheels each labeled with digits 1 to 8 How many 5 digit combination lock codes are possible if no digit can be repeated?
6,720 combinations.
How many computer passwords that consist of 4 different digits can be formed from among the digits 0 to 9?
The number of 4 digit codes, using different digits, is 10*9*8*7 = 5040. However, computer passwords can, usually, have repeated digits and, if that is allowed, you can have 104 = 10000 codes.
How many 4 letter codes are there if letters are not repeated?
If letters cannot be repeated, then there are 26 options for the first letter. There are then 25 options for the second letter. There are then 24 options for the third letter, and 23 for the fourth. This means that in total there are 26x25x24x23 options for the code. 26x25x24x23 = 358,800. Thus, there are 358,800 possible 4 letter codes.
How many 3-digit codes using the digits 0-9 are possible if repetition are allowed?
1000
How many 3-digit codes using digits 0 through 9 are possible if repetitions are allowed?
10,000
How many digits are the webkinz codes?
8 digits.
A combination lock on a suitcase has 4 wheels each labeled with digits 1 to 8 How many 4 digit combination lock codes are possible if no digit can be repeated?
the first wheel has 8 possibilities. the second wheel has only 7 possibilities as it cannot be the same as the first. the third wheel has 6 possibilities and the last has only 5 possibilities. 8*7*6*5=1680
