SOLUTION: How many 3-digit area codes are possible, assuming that the first digit cannot be a 1 or a 0?

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Question 1026713: How many 3-digit area codes are possible, assuming that the first digit cannot be a 1 or a 0?
Answer by mathmate(429) About Me  (Show Source):
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Question:
How many 3-digit area codes are possible, assuming that the first digit cannot be a 1 or a 0?

Solution:
This is a three step experiment.
The number of possible outcomes is the product of the individual steps.
Each digit can vary from 0-9 (10 choices) except the first which is 2-9 (8 choices).
Step 1: 8 possible outcomes.
Step 2: 10 possible outcomes
Step 3: 10 possible outcomes
Number of possible outcomes for the experiment = 8*10*10 = 800