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Find that decade (Posted on 2014-01-06) Difficulty: 2 of 5
There has been only a single instance in the course of American history (1776 AD onwards) wherein there was a decade in which four of the years were prime numbers. Find that decade.

No Solution Yet Submitted by K Sengupta    
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Hints/Tips re: Look Ma, no primes! | Comment 3 of 4 |
(In reply to Look Ma, no primes! by Steve Herman)

Edited my previous post, adding the word ALL  + some additional curios.
  Posted by Ady TZIDON on 2014-01-06 14:36:19

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