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Dear All,
Please help me to solve the following problem.
A Cook Island car licence plate has two letters followed by a hyphen and then three digits.
a. How many possible plates could be generated?
My answer: 26x26x10x10x10 = 676,000
b. How many plates could begin with the letter P followed by a T?
Could you please help me to do the part b?
Cheers(Crying)
1000.
pt000,pt001,pt002,...,pt999.
Are you sure that's the question?? Seems too easy??
Yes, but how to do the part b?Quote:
Originally Posted by Debsta
That's what I did???
Your answer for part b is 1000? Could you tell me why?Quote:
Originally Posted by Debsta
Quote:
Originally Posted by turboman
He listed all the possibilities there. Another way to see it is that because you've locked the first two positions, the # of possibilities is 676,000 / 676 = 1000
Thank you for your answer but I do not understand about your calculation. Could you tell me why?Quote:
Originally Posted by harbottle
Cheers,
There's only one choice for the first letter (because it has to be a P), there is only one choice for the second letter because it has to be a T, there are 10 choices for the first digit, 10 choices for the second digit and 10 choices for the third digit. Multiply these all together 1x1x10x10x10 =1000.
Count the favorable outcomes listed in post #2.Quote:
Originally Posted by turboman
Thread closed.