Question 584237: Philippine peso bills are identified by serial numbers containing 8 characters. The first 2
characters are letters in the English alphabet (in any order) and the last 6 digit are numbers from
0 to 9.
a. How many bills can be coded this way?
b. If each letter and each number can occur only once, how many bills can be coded in
this way?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Philippine peso bills are identified by serial numbers containing 8 characters. The first 2
characters are letters in the English alphabet (in any order) and the last 6 digit are numbers from
0 to 9.
a. How many bills can be coded this way?
Pattern: LLNNNNNN
Ans: 26*26*10^6 = 676x10^6
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b. If each letter and each number can occur only once, how many bills can be coded in this way?
Ans: 26*25*10*9*8*7*6*5 = 98,280,000
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Cheers,
Stan H.
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