In the first decade of numbers (1-10), there are four prime numbers (2,3,5,7). In the second decade (11-20), there are another four (11,13,17,19).
Are there other such decades with four prime numbers?
(In reply to
re: spoiler -- more by Charlie)
What program language is this?
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Posted by Paddy
on 2006-11-18 11:25:34 |