Answer And explanation
a)
has 1/
probability guess the correct source
b)
Each element in
is mapped by
/
. There are
So there are
-1 elements.
number of target elements = 
number of source elements =
-1
probability =
-1 /
c) Probability of the correct target element
1/
She can use a flashdrive to store it, or she can go to her documents folder and store it. When she gets on the computer later, she can then continue working on the project.