Question

Assume a country has 3-digit area codes that all have 0 or 1 as the middle digit and do not have 0 or 1 as the first digit. Use this information to answer parts (a) and (b) (a) How many area codes are possible with this arrangement? There are area codes possible. (Type a whole number.) If the country uses a 5-digit sequence for each telephone number, then how many telephone numbers does the country permit per area code? (The first three digits that follow the area code cannot be 0. Assume that there are no other restrictions.) The country's 5-digit sequence will permit telephone numbers. (Type a whole number.) (b) The country recently experienced a shortage of area codes. To avoid this, the country removed the restriction on the second digit. How many area codes are available under the new system? There are area codes possible. (Type a whole number.) Enter your answer in each of the answer boxes.

          Assume a country has 3-digit area codes that all have 0 or 1 as the middle digit and do not have 0 or 1 as the first digit. Use this information to answer parts (a) and (b)
(a) How many area codes are possible with this arrangement?
There are area codes possible.
(Type a whole number.)
If the country uses a 5-digit sequence for each telephone number, then how many telephone numbers does the country permit per area code? (The first three digits
that follow the area code cannot be 0. Assume that there are no other restrictions.)
The country's 5-digit sequence will permit telephone numbers.
(Type a whole number.)
(b) The country recently experienced a shortage of area codes. To avoid this, the country removed the restriction on the second digit. How many area codes are
available under the new system?
There are area codes possible.
(Type a whole number.)
Enter your answer in each of the answer boxes.

Assume a country has 3-digit area codes that all have 0 or 1 as the middle digit and do not have 0 or 1 as the first digit. Use this information to answer parts (a) and (b)
(a) How many area codes are possible with this arrangement?
There are area codes possible.
(Type a whole number.)
If the country uses a 5-digit sequence for each telephone number, then how many telephone numbers does the country permit per area code? (The first three digits
that follow the area code cannot be 0. Assume that there are no other restrictions.)
The country's 5-digit sequence will permit telephone numbers.
(Type a whole number.)
(b) The country recently experienced a shortage of area codes. To avoid this, the country removed the restriction on the second digit. How many area codes are
available under the new system?
There are area codes possible.
(Type a whole number.)
Enter your answer in each of the answer boxes.

Added by Jesse S.

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