a) randInt(1,100) then hit the ENTER button. Then, just record the answer on a sheet of paper.
Next, hit "ENTER" again and you will get the next number. Continue hitting ENTER until you record all 10 values.
For example, when I do it, I get ...
30
61
38
42
58
89
39
57
65
61
Now any number between 1 and 80 is a shutdown. For my example, they were ALL shutdowns
b) randInt(1,100) ... the only difference here is use 1 to 90 for shutdown
c) Here you want to do the same thing except create 2 columns. Put 20 random numbers in EACH column using the exact same function randInt(1,100)
Now if either the first column is 1-80 or the second column is 1-90, then put the word shutdown next to that line.
For example,
85 75 shutdown because the second column is between 1-90
85 93 no shutdown because both are outside the range.
Hope that helps