Question

Anil bags contain 5 red marbles,8 white marbles and 4 green marbles.
One Marble is taken out of box at random.What is the probability that the marble
taken out will be (i)Red (ii)White (iii)Not Green
(class 10 CBSE SAMPLE PAPER 2017-18 MATHS)

Answer 1

Given:


Number of red marbles = 5

Number of white marbles = 8

Number of green marbles = 4

Total number of Marbles in a bag = 5 + 8 + 4 = 17


Total number of outcomes= 17



(i)  Let E1 be the event of selecting a red marble


Number of outcomes favourable E1(Red)= 5



Required Probability of red marbles P(E1) = 5/17



(ii)

Let E2 be the event of selecting a white marble

Number of outcomes favourable E2(white)= 8



Required Probability of white marbles P (E2) = 8/17



(iii) Let E3 = event of selecting a not green marble


= Event of drawing either red or white marble

Number of outcomes favourable to  E3(not green)= 5+8=13



Required Probability of taken out not a green marble P(E3) = 13/17


Hope this will help you.......

Answer 2

(i) P(getting red marbles) = 5/17
(ii) P(getting white marbles) = 8/17
(iii) P(getting Not green) = 13/17

Here is your ans. guys!!!!