Six students, A, B, C, D, E, F, are to give speeches to the ...

[mmm]

Question 1

Amy, Jean, Keith, Tom, Susan, and Dave have all been invited to a birthday party. They arrive randomly and each person arrives at a different time. In how many ways can they arrive? In how many ways can Jean arrive first and Keith last?  Find the probability that Jean will arrive first and Keith will arrive last.
◦ 120; 6;
◦ 720; 24;
◦ 720; 15;
◦ 120; 10;

Question 2

Six students, A, B, C, D, E, F, are to give speeches to the class.  The order of speaking is determined by random selection. Find the probability that (a) E will speak first (b) that C will speak fifth and B will speak last (c) that the students will speak in the following order: DECABF (d) that A or B will speak first.
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[Pamela.irrgang@yahoo.com]

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[mmm]

Excellent

[miss.ashley]

Thanks for the timely response, appreciate it