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Find the next term in the series.
1,7,17,31,49,71
91
86
97
87
None of these
1 =$$2(1)^2-1$$7 =$$2(2)^2-1$$17 =$$2(3)^2-1$$31 =$$2(4)^2-1$$49 =$$2(5)^2-1$$71 =$$2(6)^2-1$$Next terms =$$2(7)^2-1 = 97$$
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