Six Students, A, B, C, D, E, F, Are to Give

Multiple Choice

Six students, A, B, C, D, E, F, are to give speeches to the class. The order of speaking is determined by randomselection. Find the probability that (a) E will speak first (b) that C will speak fifth and B will speak last (c) thatthe students will speak in the following order: DECABF (d) that A or B will speak first.

A) $\frac { 1 } { 6 } ; \frac { 1 } { 24 } ; \frac { 1 } { 720 } ; \frac { 1 } { 3 }$
B) $\frac { 1 } { 6 } ; \frac { 1 } { 12 } ; \frac { 1 } { 720 } ; \frac { 1 } { 3 }$
C) $\frac { 1 } { 6 } ; \frac { 1 } { 36 } ; \frac { 1 } { 720 } ; \frac { 1 } { 12 }$
D) $\frac { 1 } { 6 } ; \frac { 1 } { 36 } ; \frac { 1 } { 360 } ; \frac { 1 } { 3 }$