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OpenStudy (anonymous):
The first three terms of a sequence are given. 11,16,21,... Find the 42nd term.
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OpenStudy (cwrw238):
this looks like an arithmetic series where common difference = 5 ( 16-11 = 5 and 21-16 = 5 nth term = a + d(n-1) where a = first term and d = common difference so 42d term = 11 + 5(42-1)
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