Suppose that license plates in a certain state have the pattern of three capital letters from the English alphabet followed by four digits from 0-9. . What is the probability that the four digits form your birth year?
LOL
That was a Melody style solution Alan :)
I must be contagious.
Nauseated - do I have a disease - not CDD - maybe CCD (Contagious complications disease) ?
---------------------------------------------------------
For those who didn't quite get it.
There are 10 possibilities for the 1st digit
There are 10 possibilities for the 2nd digit
There are 10 possibilities for the 3rd digit
There are 10 possibilities for the 4th digit
So there are a total of 10^4 = 10000 different number combinations
ONLY one of those is your birthyear so
The probabilitiy that it will display your birthyear is 1/10000 or 0.0001
If you were born in any year from 2000 to 2015 the probability of getting the 1st digit (2) is 1/10; that of getting the 2nd digit (0 ) is 1/10; that of getting the third digit (0 or 1) is 2/10, and that of getting the fourth digit (0, 1, 2, 3, 4, 5) is 6/10, so overall:
probability = 1*1*2*6/10^4 = 0.0012
Of course, if you are referring to someone like Chris or myself then the probability increases dramatically!
No! On second thoughts, the probability of matching your specific four digits is just 1/10 for each digit, so the probabilty is just 0.0001, whenever you were born!. (Chris and I are let off the hook!)
I must stop trying probability questions at night! (Possibly at any time!)
.
LOL!!!! Nice one, ALAN !!!
{In my case, the digits would need to be followed by two more letters.....B.C. }
{Hey, jist ask zegroes......... }
LOL
That was a Melody style solution Alan :)
I must be contagious.
Nauseated - do I have a disease - not CDD - maybe CCD (Contagious complications disease) ?
---------------------------------------------------------
For those who didn't quite get it.
There are 10 possibilities for the 1st digit
There are 10 possibilities for the 2nd digit
There are 10 possibilities for the 3rd digit
There are 10 possibilities for the 4th digit
So there are a total of 10^4 = 10000 different number combinations
ONLY one of those is your birthyear so
The probabilitiy that it will display your birthyear is 1/10000 or 0.0001