1. In a game show, sergio is asked to draw a single ball from a box containing 50 balls numbered 1 to 50. If the ball drawn bears a prime number or multiple of 10, Sergio wins 1,000 in cash . Similarly, if Sergio draws a ball whose number is either an even number or a multiple of 5, he wins 500 in cash. what is the probability that sergio shall win ...

a) 1,000?

b) 500?

2. What is the probability of picking a card that is either is either a diamond or an ace from a standard deck of 52 cards?

3. A box contains 4 white balls and 5 red balls. If three balls are drawn from the box, find the probability that;

a) one ball is white

b) no ball is white

c) atleast one ball is white

d) at most one ball is white

Can somebody out there help me up? I really do appreciate it if anybody could help me?