Question

In a lottery there are 10 prizes and 25 blanks. What is the probability of getting a prize?

Answer 1

Total number of lottery tickets = 10 + 25 = 35
Number of prizes = 10

Let  E be the event of getting a prize.

∴ P(getting a prize) = P(E) = `"Number of outcomes favourable to E"/"Number of all possible outcome"= 10/35 = 2/7`

Thus, the probability of getting a prize is `2/7`