Example : A bag contains white and 5 black balls A bali drawn at random and replaced and then again a ball is drawn this is repeated 4 times, what is probability 2 black and 2 white ball illbe drawn n these rials Golution uhen a bal is drawn out of 4 white and 5 black balls. et S be the sample space and evenh E be the event of drawing a black balt
"Total number of balls in the bag and mo of whie ball- 4 Here humber of trials 4 trials p is the probability that a black ball will be drawh in one hial m(S)
1 is apobabilkt drauing all in ohe trial a whi te (x-2)-P(2) 4 CP 2 4
2 2 4-23 41 5x5 4x4 9X9 9 2181
my name is Aishwarya Vitthal Hase. i am currently studying in fourth Year B tech engineering in Elecronics and telecommunication branch.