4]
a) A bag contains 12 balls out of which x are white
(i) If one ball is drawn at random what is the probability that it will be a
white ball ?
(ii) If 6 more white balls are put in the bag, the probability of drawing a
white ball will double than that in (i) .Find x.
Answer:
(i) x/12
(ii) no.of balls= 12+6=18
no.of white balls=2x
=>6+x=2x
6=x