Year 2 Lesson 17 In-class Exercise
Name ________________________
1). I roll 2 dice. What is the probability that...
a). I get 2 threes? ________
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b). both numbers are the same? ________
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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? _________
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b). I draw a spade? _________
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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? _________
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b). I don't draw a green marble? _________
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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? _________ |
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