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The 7-digit numbers in a given area code have the form ABC-XXXX. Given ABC is 972, how many
possible phone numbers are there? (The form is 972-XXXX and the numbers 0-9 can be used)

Respuesta :

Total number of possibilities is 10,000.

Step-by-step explanation:

Given:

Total number between (0-9) = 10 number

Frequency of unknown number = 4 times

Find:

Total number of possibilities

Computation:

Total number of possibilities when repetition is allowed;

Total number of possibilities when repetition is allowed = 10 × 10 × 10 × 10

Total number of possibilities when repetition is allowed = 10,000

Total number of possibilities when repetition is allowed = 10,000 times

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Given:

Overall number [tex]\bold{(0-9) = 10}[/tex]

Unknown source frequency [tex]= \bold{4\ times}[/tex]

Find:

The overall amount of opportunities=?

Calculation:

The total possible number for repeaters [tex]=\bold{ 10 \times 10 \times 10 \times 10}[/tex]

The total amount of repeat possibilities [tex]=\bold{ 10,000}[/tex]

Total amount of repeating options [tex]=\bold{ 10,000\ times}[/tex]

So, the "total number of possibilities is [tex]\bold{ 10,000}[/tex]"

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brainly.com/question/17539761

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