For the lottery described in Exercise 2.4-13, In Exercise 2.4-13 It is claimed that for a particular

Question:

For the lottery described in Exercise 2.4-13,
In Exercise 2.4-13
It is claimed that for a particular lottery, 1/10 of the 50 million tickets will win a prize.
Find the smallest number of tickets that must be purchased so that the probability of winning at least one prize is greater than
(a) 0.50;
(b) 0.95.