Thereare 6 red marbles numbered from 1 to 6 and 4 white marbles numbered from 12 to 15.
∴ Total number of marbles =10
(i) Probability of a marble drawn is white =
4
10
=
2
5
(ii) There are two marbles that are white and odd numbered.
∴ Probability of a marble drawn is white and odd numbered =
2
10
=
1
5
(iii) There are 3 red marbles that are even numbered and 2 white marbles that are even numbered.
So, there are 5 marble that are even numbered.
∴ Probability of a marble drawn is even numbered =
5
10
=
1
2
(iv) There are 6 red marbles and 5 even numbered marbles.
However, there are 3 red marbles that are even numbered.
So, total number of marbles that are red or even =6+5-3=8
∴ Probability of a marble drawn is red or even numbered =
8
10
=
4
5
