Mathematics, 21.08.2020 03:01 brainlazslxmfsjakzfn
The 7-digit numbers in a given area code have the form ABC-, where X, B, and C can be any digit 1-9 and A is
restricted to 0-9. There are two other restrictions:
• B and C cannot both equal 1 since these values are designated for other purposes such as 911 (emergency)
and 411 (information), and
• 555-0100 through 555-0199 are reserved for fictional uses such as in television shows or movies.
According to these conditions, how many 7-digit numbers are possible in a single area
code?
Answers: 1
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The 7-digit numbers in a given area code have the form ABC-, where X, B, and C can be any digit 1-9...
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