Question

a box contains 7 green, 5 yellow and 8 blue coloured balls. one ball is taken out from a box at random. what is the probability that the ball taken out is
1st. green coloured
2nd. blue coloured
3rd. not yellow coloured ​

Answer 1

Answer:

1. probability of green ball= 7/20

2. probability of blue ball= 8/20=2/5

3. not yellow ball=7+8/20

=15/20

=3/4