Probability Problems
Problem
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Work it out
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Answer
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There are 4 differently coloured marbles. You randomly pick a marble. What is the probability of getting the green marble?
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I have 4 colors and 1 goal to get a green marble. So it will be ¼ because I have
1 green marble and altogether there are four marbles.
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¼
25
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Convert ⅙ into percentage probability.
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Divide 100 into 6.
100 divided by 6 = 60.67
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60.67
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Convert ⅝ into percentage probability.
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⅝ = 55 %
100 divided by 8 was 11% and then I multiplied it by 5 and got 55.
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55 %
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Convert 12/18 into percentage probability
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12/18 = 65.57
100 divided by 12 = 66.67
12 divided by 18 = 55.55
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65.57 %
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There are seven different coloured cards in a bag. You pick one without looking. What is the probability of picking the blue card? Give the answer in both number of chances and percentage.
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Because their is only one blue card in a bag which meant a lower chance of getting a blue card.
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1/7
14%
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Convert 4/5 chances into percentage probability.
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100 divided by 5 equals 20% then multiplied 20% by 4 which will equal 80%
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80 %
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You and four friends all jump into a pool. What is the percentage chance of you all getting wet?
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Absolute chance because they jumped into the water and water makes you wet.
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100%
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There are 100 tickets but only one is golden. You buy five tickets, but your friend buys thirteen tickets and your brother buys eighteen tickets. Who is most likely to get the golden ticket? Why?
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Thirteen tickets ( Likely )
18 Tickets ( Absolute certain )
5 Tickets ( Not a Chance )
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Absolute certain for the brother to get a golden ticket.
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Convert 75% probability into number of chances.
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Probability of chances is 1 out of 75 because you have a “number” of chances!
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1/75
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You order a supreme pizza and take three out of eight slices. What is the probability of getting a slice with pineapple?
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⅜ because you have eight slices of pizza and only pulled out 3.
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⅜
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