Answer:
C) 10,000,000
Step-by-step explanation:
Data provided in the question:
- The phone number is of 7 digits
- we have choices from 0-9
meaning 10 number of choices, 0 1 2 3 4 5 6 7 8 9
we have 10 choices out of 10 for each of the 7 blanks
Therefore,
The total number of different phone numbers can there be in one area code that can be formed
= 10 × 10 × 10 × 10 × 10 × 10 × 10
= 10^7
= 10,000,000
N - 2 = 10n + 4/2
-2 = 9n + 4/2
-4/4 = 9n
-1 = 9n
-9 = n
N is -9.
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Answer: 14 squared units
Step-by-step explanation:
