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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: Yoda on October 16, 2014, 10:44:14 pm

Title: Probability question?
Post by: Yoda on October 16, 2014, 10:44:14 pm

Four student leaders are to be randomly selected for a task from six female and five male student leaders. Find the probability that
a) the four students selected are all male
b)there are an odd number of male students in the group selected
Thankyou

Title: Re: Probability question?
Post by: RKTR on October 16, 2014, 10:47:30 pm

a)  5C4 / 11C4
   
b) 1 male,3 female
     or 3 male, 1 female
     
   (5C1 x 6C3 + 5C3 x 6C1) / 11C4