document.write( "Question 1162298: A license plate has three letters and two digits. How many
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document.write( "plates can you have if the first digit cannot be zero and the
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document.write( "digits cannot repeat?\r
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document.write( "Think I've got it but am not sure Here's my Work\r
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document.write( "License plates = 3Letters, 2 Digits, 1st Digit can't be 0, Digits no Repeats
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document.write( "Each Letter(L)has 26 possible options so first set this up L(26)L(26)L(26)
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document.write( "Now Digits (D)
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document.write( "1st Digit (D) cannot be 0 which leaves (9) options
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document.write( "2nd Digit (D) no repeats allowed but could be 0 which brings back to (9) options
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document.write( "Problem now looks line L(26)L(26)L(26) D(9)D(9)
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document.write( "I multiply out 26x26x26x9x9= 1,423,656 possible combinations
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document.write( "Is this correct?
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Algebra.Com's Answer #786076 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "A license plate has three letters and two digits. How many \n" ); document.write( "plates can you have if the first digit cannot be zero and the \n" ); document.write( "digits cannot repeat?\r \n" ); document.write( "\n" ); document.write( "Think I've got it but am not sure Here's my Work\r \n" ); document.write( "\n" ); document.write( "License plates = 3 Letters, 2 Digits, 1st Digit can't be 0, Digits no Repeats \n" ); document.write( "Each Letter(L)has 26 possible options so first set this up L(26)L(26)L(26) \n" ); document.write( "Now Digits (D) \n" ); document.write( "1st Digit (D) cannot be 0 which leaves (9) options \n" ); document.write( "2nd Digit (D) no repeats allowed but could be 0 which brings back to (9) options \n" ); document.write( "Problem now looks line L(26)L(26)L(26) D(9)D(9) \n" ); document.write( "I multiply out 26x26x26x9x9= 1,423,656 possible combinations \n" ); document.write( "Is this correct? \n" ); document.write( "============================== \n" ); document.write( "It's correct if the letters are allowed to repeat.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |