Question

a box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble taken out will be
(a)Red
(b)White
(c)Green

Answer 1

when red marble taken then possible outcome 5/17
when white marble taken then possible outcome 8/18
when green marble taken then possible outcome 4/17.

Answer 2

total marbles =red +white + green

=5+8+4 =17

(a)red =5/17

(b)white =8/17

(c)not green = red =white

= 5+8 =13

= 13/17