A) \[{{3}^{21}}\]
B) \[{{3}^{10}}\]
C) \[{{3}^{19}}\]
D) \[{{3}^{15}}\]
Correct Answer: C
Solution :
\[{{3}^{n}}=729\] \[\Rightarrow \] \[{{3}^{n}}={{3}^{6}}\] \[\Rightarrow \] \[n=6\] \[\therefore \] \[{{3}^{3n+1}}={{3}^{3(6)+1}}={{3}^{18+1}}={{3}^{19}}\]You need to login to perform this action.
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