Hi,

Note: shortlisted 2/3 of the time 

'short listed' ...  more family than friends in the group of 3

A.  2C2*5C1 are the 5 ways there are more family than friends:  

P(shortlisted) = 2C2*5C1/7C3 =  5/35 = 1/7

P(shortlisted 2/3 of the time ) =  (2/3)(1/7)  =  2/21 = .0952

b. P =  

RELATED QUESTIONS

I don't understand how to make a word problem into a linear system. This is an example in  (answered by solver91311)

In class we are adding and subtracting rational expressions with unlike denominators. It... (answered by mananth)

My son has this problem on his math.  I don't have any idea where to start.  We really... (answered by scott8148,Earlsdon,pavel111)

My problem :  At a recent birthday party for a friend of mine, I pointed out the... (answered by vleith,jim_thompson5910)

Hello! :) Please answer my question. These are the directions: Find the other endpoint of  (answered by josgarithmetic)

I just want to double check on the problem I am working on now,it is much appreciated if... (answered by josgarithmetic,MathLover1)

I have $5.50 total in my pocket, consisting of nickels, dimes and quarters. There are 30... (answered by Edwin McCravy)

The answer to this equation:
0+50*1-60-60*0+10=?
My answer is 10.  However, a friend is  (answered by rothauserc,macston,MathTherapy)

Hi,  I am more of an older folk here so its not for homework.  Actually it was a question  (answered by jim_thompson5910)