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Question

The nth term of the sequence 1p, 1+2pp, 1+4pp,... is

A
1+2np+2pp
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B
12np2pp
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C
1+2np2pp
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D
1+2npp
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Solution

The correct option is C 1+2np2pp
Sequence, 1p, 1+2pp, 1+4pp........
Here
a=1p, d = 1+2pp 1p
d=1+2p1p
d=2
tn = 1p+(n1)2 = 1p + 2n21 tn
= 1+2np2pp

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