Please help me :) It will make me happy.

A probability experiment is conducted in which the sample space of the experiment is S = {9, 10 , 11, 12,13,14,15,16,17,18.19, 20}, even F={13,14,15,16,17}, and event G= {17,18,19,20}. Assume that each outcome is equally likely. List the outcomes in F or G. Find P(F or G) by counting the number of outcomes in F or G. Determine P(F or G) using the general addition rule.

Question

Please help me :) It will make me happy.

A probability experiment is conducted in which the sample space of the experiment is S = {9, 10 , 11, 12,13,14,15,16,17,18.19, 20}, even F={13,14,15,16,17}, and event G= {17,18,19,20}. Assume that each outcome is equally likely. List the outcomes in F or G. Find P(F or G) by counting the number of outcomes in F or G. Determine P(F or G) using the general addition rule.

lacris · Answer

So for the first question a. F or G = {13,14,15,16,17,18,19,20) which was my answer.

However when they asked me:
Find P(F or G) by counting the number of outcomes in F or G.
P(F or G) I did:|dw:1474342635529:dw|