a bag contains 5 blue balls, 3 white balls, 2 red balls.
if we peak 6 balls randomly what is probability to peak 3 blue 2 white and 1 red?

Question

a bag contains 5 blue balls, 3 white balls, 2 red balls.
if we peak 6 balls randomly what is probability to peak 3 blue 2 white and 1 red?

praxer · Answer

The probability of an event = know of events/ favorable outcome

can you proceed now, @syltan

anonymous · Answer

well i know that.
but is this a counting problem?
because i dont know how to start it.

praxer · Answer

show me  how, you have proceeded

anonymous · Answer

i think for number of event  we have to search no of  combinations using formula nCr
ie  5C3  * 3C2  *  2c1 
is it @praxer

anonymous · Answer

we peak
numerator( 3 out of 5)(2 out of 3) (1 out of 2)                                       
denominator(6 out of 10)

anonymous · Answer

is it like this i am not sure.

anonymous · Answer

@syltan  : it will be like that little bit more
it can be any combination of 6 ball out to 10 ball in denominator  and 
in numerator ie know of events 
it will be 
 5C3  * 3C2  *  2c1

here  * (multiply ) bcoz all three even are happening at same time 
so answer wil be 
(5C3  * 3C2  *  2c1 )/10C6

08surya · Answer

|dw:1380458480264:dw|