Probablities with Permutations help

Six stand-up comics, A, B, C, D, E, and F, are to perform on a single evening at a comedy club. The order of performance is determined by random selection. Find the probability (in fractional form) that:

a. Comic E will perform third.
b. Comic B will perform fourth and Comic A will perform fifth.
c. The comedians will perform in the following order: E, B, A, C, D, F.
d. Comic D or Comic F will perform third.

can anyone help me plz?? I cant understand and do this problem. Thank you

This Is NOT my homework. Its a practice exercise from the online book, since I don't understand how to do it I thought I might be able to get help here

cc.caroline15 said:

This Is NOT my homework. [It's] a practice exercise from the online book

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Hello Caroline:

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Thank you! :cool:

try to answer that question caroline.. even if it is wrong at least you try it.. and we've corrected it for you if it is wrong ....!