Question

27. In a bag containing three balls, a white ball was placed
and then one ball was taken out at random. What is
the probability that the extracted ball would turn on
colour of the balls that were initially in the bag were
to be white, if all possible hypothesis concerning the
equally possible?
(a) 5/8
(b) 3/4
(C) 1/2
(d) 3/8​

Answer 1

Answer:

5/8

Step-by-step explanation:

Since all possible hypothesis regarding the colour of the balls are equally likely, therefore these could be 3 white balls, 2 white balls or 1 white ball, initially in the bag.

∴ Required probability

=

1/4(1+3/4+1/2+1/4)

=1/4(1+3+2+1/4)

=5/8