kalexia Posted April 7, 2008 Report Posted April 7, 2008 IL upside down and flipped horizontally Quote
Tormod Posted April 7, 2008 Report Posted April 7, 2008 The sum of four consecutive primes (13 + 17 + 19 + 23), as well as the sum of six consecutive primes (5 + 7 + 11 + 13 + 17 + 19). TheBigDog 1 Quote
freeztar Posted April 8, 2008 Report Posted April 8, 2008 The non-1 integer factors of 21 placed sequentially from highest to lowest. Quote
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