Evaluate the infinite geometric series 0.4 + 0.036 + 0.0000324 + ... Express your answer as a fraction with integer numerator and denominator.
Find the common ratio, r, given by the ratio of one term divided by the immediately preceeding term. The infinite series sum is then a/(1-r) where a is the first term.
Evaluate the infinite geometric series 0.4 + 0.036 + 0.0000324 + ...
0.036 / 0.4 ==>> ratio = 0.09
0.0000324 / 0.036 ==>> ratio = 0.00009
These ratios aren't the same, so that was not a geometric series.
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+430 
