Answer:

Explanation:
Total number of ways to award the prizes = 336
Total number of people entered in the quiz = 10 + 2 = 12

Now one prize has been awarded to me, so remaining number of ways to award the prizes = 336 - 1
= 335
Also, one person that is i has received the prize so persons left who can receive the prize = 12 - 1 = 11

To find the required probability, Multiply both the above probabilities.
