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OpenStudy (anonymous):
What is the next number in the series? 1, 2, 4, 7, 11, 16, __ 21 23 24 22 20
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OpenStudy (anonymous):
22
OpenStudy (anonymous):
awesome :)
OpenStudy (anonymous):
the sequence is +1,+2,+3,+4,+5,+6 so, 16+6=22
Directrix (directrix):
1, 2, 4, 7, 11, 16, 20, 22, 29, 37,... Formula for nth terms where n = 1, 2, 3, ... is 1/2 *( x^2 - x + 2)
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