davila944 davila944
  • 15-10-2018
  • Mathematics
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Outside at home there is a 6 key keypad with letters ABC DE that can be used to open the garage if the correct six letter code is entered each Key May be used only once how many codes are possible

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lauraybanez1 lauraybanez1
  • 16-10-2018

6C4 ways to choose the 4 letters.  4! ways to make a code of 4 letters. 6C4=15, 4!=24, and 15×24=360

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