<image>The stem-and-leaf plot and the frequency distribution histogram of a mathematics test performance in a certain class at Mingda Middle School in Changsha were damaged to different extents, but the visible parts are as follows. Based on these, answer the following questions: $$[$$source:$$Zxxk.Com]$$ \textit{} 
($$Ⅰ$$) Calculate the total number of students in the class and the frequency of scores in the interval $$[80,90)$$; 
($$Ⅱ$$) If two test papers are randomly selected from the scores in the interval $$[80,100]$$ to analyze the students' score deduction, find the probability that at least one of the selected papers has a score in the interval $$[90,100]$$.