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added by Kasia June 4, 2012, 7:42 p.m.
What is the next number in the sequence? 2,3,5,7,11,13...
15
17
19
21
The sequence 2,3,5,7,11,13 includes prime numbers only. Many people incorrectly select 15, fooled by the fact that all prime numbers except 2 are odd.
Kasia
0
Correct this question
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Very interesting!
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