# Sequence

Find the common ratio of the sequence -3, -1.5, -0.75, -0.375, -0.1875.

Ratio write as decimal number rounded to tenth.

Correct result:

q =  0.5

#### Solution:

$q=\frac{{a}_{n+1}}{{a}_{n}}=\frac{-1.5}{-3}=0.5$

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