The possible area codes for different plan are .
Step-by-step explanation:
Given: In a different plan for area codes, the first digit could be any number from through, the second digit was either and the third digit could be any number except .
As mentioned in question:
Area codes are created by digits as:
first digit could be any number from through are .
Second digit are
And third digit couldbe any number except are .
Total number of area codes are .
Hence, the possible area codes are
Learn about possible codes here:
In a different plan for area codes, there are 140 possible codes.
In a different plan for area codes, the first digit could be any number from 4 through 8, the second digit was either 3, 4, 5, or 6, and the third digit could be any number except 2 or 5. To calculate the total number of possible area codes, we need to multiply the number of choices for each digit.
For the first digit, there are 5 choices (4, 5, 6, 7, 8).
For the second digit, there are 4 choices (3, 4, 5, 6).
For the third digit, there are 7 choices (0, 1, 3, 4, 6, 7, 8).
To find the total number of possible area codes, we multiply these choices together: 5 x 4 x 7 = 140.
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Answer:
Yes, his answer is reasonable if he is very young.
Explanation:
If he is at a very young age then his answer would be yes reasonable, but seeing as he calculated this on his own, most likely not.