## Year 2 Lesson 17 In-class Exercise

Name ________________________

1). I roll 2 dice. What is the probability that...
 a). I get 2 threes? ________ b). both numbers are the same? ________ c). they add up to 6? ________ d). the second number is less than or equal to the first? ________

2). I flip a fair coin 3 times. What are the chances that...
 a). I get all heads? _________ b). I get exactly one head? _________

3). I flip a fair coin 5 times and get heads every time. What is the probability that I will get another head on the sixth toss? _______

4). Using a standard deck of 52 cards, what is the probability that...
 a). I draw a ten? _________ b). I draw a spade? _________ c). I draw the ten of spades? _________ d). I draw a red card? _________

5). I have a bag of marbles. There are 5 red, 6 green and 3 black marbles. What are the chances that...
 a). I draw a green marble? _________ b). I don't draw a green marble? _________ c). I draw a red marble, put it back, and draw another red marble? _________ d). I draw a red marble followed by another red marble (without putting the first one back)? _________

6). Using the same marble bag as in problem 5, what is the probability that ...

 a). I draw a green marble, keep it, and then draw a black marble? _________ b). I draw a black marble, hold it, and then draw a green marble? _________