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| Prime times (Posted on 2011-03-18) |
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3:53 is a prime time because 353 is prime.
1. How many prime times are there in 12 hours?
2. How many prime times are there in 24 hours?
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Submitted by Math Man
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Rating: 4.0000 (1 votes)
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Solution:
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(Hide)
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1. 111
2. 211
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