# How do you find the nth term of the sequence 1/2, 1/4, 1/8, 1/16, ...?

${a}_{n} = \frac{1}{2} ^ n$
We have $\frac{1}{2} , \frac{1}{2} ^ 2 , \frac{1}{2} ^ 3 , \cdots , \frac{1}{2} ^ n$ so
${a}_{n} = \frac{1}{2} ^ n$