If \( 10^{\mathrm{n}}+3.4^{\mathrm{n}+2}+\mathrm{K} \) is divisible...

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If \( 10^{\mathrm{n}}+3.4^{\mathrm{n}+2}+\mathrm{K} \) is divisible by \( 9, \forall \mathrm{n} \in \mathrm{N} \), then the least
\( \mathrm{P}_{\mathrm{H}} \) positive integral value of \( k \) is

W
a)5
b)3
c) 7
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