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Which number will come next in the following series?
5, 12, 31, 68, 129, ..........
5,12,31,68,129...... implies that
$$1^3+2^2,2^3+2^2,3^3+2^2,4^3+2^2,5^3+2^2,.......$$
So,next term should be $$6^3+2^2=216+4=220.$$
A is correct choice.
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