Question

13
13. A bag contains 5 White ball
, 7 red balls 4 black balls and 2 blue balls One balls dram
random from the bag what is probabilility that the ball drawn is white or blue
(b) 2
​

Answer 1

Answer:

Let A bag of ball be set A

therefore

A={5 white balls, 7 red balls, 4 black balls, 2 blue balls}

A={4}

random from the bag...

B={5 white balls, 2 blue balls }

B={2}

therefore

p(B)=n(A)/n(B)

therefore p(B)=4/2

p(B)=2