Question

A bag contains 20 tickets, numbered from 1 to 20. Two tickets are drawn without replacement. What is the probability that the first ticket has an even number and the second an odd number. Select the correct answer from above options

Answer 1

There are total `20` tickets numbered from `1` to `20`. So, `10` tickets has even number and `10` tickets have odd numbers. Now, probability of drawing a ticket that has even number ` = 10/20 = 1/2` Now, there are total `19` tickets and `10` odd tickets are available. `:.` Probability of drawing a ticket that has odd number `= 10/19` `:.` Required probability ` = 1/2**10/19 = 5/19`