Question -
Answer -
What is the probability that the marble taken out will be
(i) red?
(ii) white?
(iii) not green?
Solution
The Total no. of balls = 5+8+4 = 17
P(E) = (Number of favourable outcomes/ Totalnumber of outcomes)
(i) Total number of red balls = 5
P (red ball) = 5/17 = 0.29
(ii) Total number of white balls = 8
P (white ball) = 8/17 = 0.47
(iii) Total number of green balls = 4
P (green ball) = 4/17 = 0.23
∴ P (not green) = 1-P(green ball) = 1-(4/7) = 0.77