Find the Nth Term of the Geometric Sequence $2,1 , \frac { 1 } { 2 } , \frac { 1 } { 4 } , \frac { 1 } { 8 }$

question 223

Multiple Choice

Find the nth term of the geometric sequence.
- $2,1 , \frac { 1 } { 2 } , \frac { 1 } { 4 } , \frac { 1 } { 8 }$

• A) \(a _ { n } = 2 \cdot \left( \frac { 1 } { 2 } \right) ^ { n + 1 }\)
• B) \(a _ { n } = 2 \cdot \left( \frac { 1 } { 4 } \right) ^ { n - 1 }\)
• C) \(\mathrm { a } _ { \mathrm { n } } = 2 \cdot \left( \frac { 1 } { 2 } \right) ^ { \mathrm { n } - 1 }\)
• D) \(a _ { n } = 2 \cdot \left( \frac { 1 } { 2 } \right) ^ { n }\)

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