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OLEGan
[10]
3 years ago
14
How many area codes (ABC) would be possible if the first 2 digits can be any number 2-9 & last digit can be any number 0-9?
Mathematics
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answer:
Korolek
[52]
3 years ago
8
0
The answer would be A. 640
Possibilities for the first two are 8 and 8 (2-9 is 8 numbers) and the last is 10 (0-9 is 10 numbers)
So the probability is found by multiplying 8*8*10 which is 640
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