Answer:
<h2>182.91 %</h2>
Step-by-step explanation:
<h3>spoiler alert: its 182.91 %</h3>
Probability of Quiz = 0.6
Probability of Not doing homework 0.85
Probability of both event happening = P1 * P2 = 0.51
The probability of there being a quiz and you not doing the homework is 51%
Try this solution, if it is possible check it in the other sources.
P.S. for the radius of convergence: it is clear that all the members of the series (except the 1st and the 2d ones) are '0'.