The nth term of the sequence 212,1713,119,2023. is
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a
155n+3
b
205n+4
c
205n+3
d
205n+2
answer is C.
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Detailed Solution
The given sequence can be written as 52,2013,109,2023,⋯The reciprocal of the number820,1320,1820,2320,⋯This is an A.Pnth term of this A.P. isan=8+5(n−1)20=3+5n20Thus, nth term of the given sequence is 205n+3