1. **State the problem:** We are given the sequence 8, 24, 72, 216, __, __ and need to find the missing terms. Then, determine if the sequence is arithmetic (A), geometric (G), or neither (N).
2. **Check if the sequence is arithmetic:** An arithmetic sequence has a constant difference between terms.
Calculate differences:
$24 - 8 = 16$
$72 - 24 = 48$
$216 - 72 = 144$
Differences are not constant, so it is not arithmetic.
3. **Check if the sequence is geometric:** A geometric sequence has a constant ratio between terms.
Calculate ratios:
$\frac{24}{8} = 3$
$\frac{72}{24} = 3$
$\frac{216}{72} = 3$
Ratios are constant and equal to 3, so the sequence is geometric.
4. **Find the missing terms:** Multiply the last known term by the common ratio 3.
Next term: $216 \times 3 = 648$
Next term: $648 \times 3 = 1944$
5. **Final answer:** The missing terms are 648 and 1944.
The sequence is geometric (G).
Sequence Type 3E52C3
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