baseballcool2549 baseballcool2549
  • 01-12-2017
  • Mathematics
contestada

A small towns phone numbers all start with 337, 352, or 363. how many phone numbers are available

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zrh2sfo
zrh2sfo zrh2sfo
  • 04-12-2017
There are 3 possibilities for the first 3 digits, so the phone numbers available are 3x10^4≈30,000 
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