Answer
Seventh term $a_{7}$ = 8019
Work Step by Step
Given
Sequence = 11, 33, 99, 297............
Formula $a_{n}$ = $a_{1}$ $3^{n-1}$
Seventh term $a_{7}$ = 11$\times$ $3^{7-1}$ = 11$\times$ $3^{6}$ = 11$\times$ 729 = 8019
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