1. How many phone numbers are possible in the (770) area
code if:
For the form ABC-, À is res...
Mathematics, 17.12.2020 19:00 asialuv
1. How many phone numbers are possible in the (770) area
code if:
For the form ABC-, À is restricted to numbers 2-9. B, C,
and X can be any digit 0-9. Also, the ABC of the phone number
cannot be 911,
a. 7,000,000
b. 7.990,000
c. 7,999,999
d. 8,000,000
Answers: 2
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