next term is 9. Look: 729 x (1/3) = 243 243 x (1/3) = 81 81 x (1/3) = 27 27 x 1/3) = 9
It is nine because you times it by a third of the previous number
The next term in the sequence 729, 243, 81, 27 is 9. This is found by noticing that each term is obtained by multiplying the previous term by \left(\frac{1}{3}\right). Continuing this pattern gives us the result.
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