Circumference = 105*pi
about 329.8672286269
and that divided by 6 is 54.9778714378, which is about 55
The chance of you drawing a 10 is 1/13 and times 13 is a 1/1 chance of drawing a ten
Looks like you just evaluated the summand for the given value of

, whereas the question is asking you to find the value of the sum for the first

terms.
Let

. Then

is the

th partial sum.

happens to be the first term in the series, which is why that box is marked correct:

But the next partial sum is not correct:

and this is not the same notion as the second term (which indeed is 0.75) in the series.
Step-by-step explanation:
kkkkk3kk3kek3ekeke293o2o22
you would divide both sides by 6 to get your answer. i hope this helps :)