Question

Two cards are drawn at random from 8 cards numbered from 1 to 8. What is the probability that the sum of numbers is even, if the two cards are drawn together ?​

Answer 1

Answer:

Answer

The number of ways of choosing one odd and one even number is

5

C

1

×

5

C

1

=5×5=25

Total number of ways of choosing 2 cards out of 10=

10

C

2

=45

Thus, probability =25/45=5/9