1. Get-A-Great-Read Books is adding a new phone line.

The phone company says that the first 3 digits of the

phone number must be $55, but the remaining 4 digits,

where each digit is a digit from 0 through 9, can be

chosen by Get-A-Great-Read Books. How many phone

numbers are possible?

A. 5 (94)

B. 53 (94)

C. 53 (104)

D. 94

E. 104

Question

Jazlene Hopkins

Mathematics

3 June, 22:54

1. Get-A-Great-Read Books is adding a new phone line.

The phone company says that the first 3 digits of the

phone number must be $55, but the remaining 4 digits,

where each digit is a digit from 0 through 9, can be

chosen by Get-A-Great-Read Books. How many phone

numbers are possible?

A. 5 (94)

B. 53 (94)

C. 53 (104)

D. 94

E. 104

+2

Answers (1)

Know the Answer?

Nola Young · Answer 1

E. 10^4

Step-by-step explanation:

The first 3 digits are fixed.

There are 10 possible numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) for each remaining 4 digits. Therefore, there are 10*10*10*10 = 10^4 ways to fill the last 4 digits, or 10^4 possible phone numbers.