Hi Dear,

In my opinion, probability problems are the most time consuming problems. I hate these problems so much because we have to pay much attention for every word when reading . My goal for this topic is we should review some basic formulas and post some problems to get used to the techniques

Okie, I post the first problems so that we can discuss :

Problem 35 - GR0568

At a banquet, 9 women and 6 men are to be seated in a row of 15 chairs. If the entire seating arrangement is to be chosen random, what is the probability that all the men will be seated next to each other in 6 consecutive positions?

a. 1/ (15 C 6) - where n C k = n!/[k!(n-k)!]

b. 6!/(15 C 6)

c. 10!/15!

d. 6!9!/14!

e. 6!10!/15!