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1
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Which inequality represents the probability, x, of any event
happening?
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2
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Mary chooses an integer at random from 1 to 6. What is the probability that the
integer she chooses is a prime number?
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3
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A bag contains eight green marbles, five white marbles, and two red
marbles. What is the probability of drawing a red marble from the bag?
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4
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A box contains six black balls and four white balls. What is the
probability of selecting a black ball at random from the box?
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5
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A six-sided number cube has faces with the numbers 1 through 6 marked on
it. What is the probability that a number less than 3 will occur on one toss of the number
cube?
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6
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When a fair coin was tossed ten times, it landed heads up the first seven
times. What is the probability that on the eighth toss the coin will land with tails up?
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7
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If the probability that it will rain on Thursday is
 , what is the probability that it will not rain on Thursday?
a) | 1 | c) |  | b) | 0 | d) |  |
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8
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Marilyn selects a piece of candy at random from a jar that contains four
peppermint, five cherry, three butterscotch, and two lemon candies. What is the probability
that the candy she selects is not a cherry candy?
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9
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The faces of a cube are numbered from 1 to 6. What is the probability of
not rolling a 5 on a single toss of this cube?
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10
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A box contains 6 dimes, 8 nickels, 12 pennies, and 3 quarters. What is the
probability that a coin drawn at random is not a dime?
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11
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If the probability of a spinner landing on red in a game is  , what
is the probability of it not landing on red?
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12
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Which event is certain to happen?
a) | Everyone walking into a room will have red hair. | c) | The Yankees baseball team will win
the World Series. | b) | All babies born in June will be
males. | d) | The Sun will rise in
the east. |
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13
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The faces of a cube are numbered from 1 to 6. If the cube is rolled once,
which outcome is least likely to occur?
a) | rolling an odd number | c) | rolling a number less than 6 | b) | rolling an even
number | d) | rolling a number
greater than 4 |
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14
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Maria has a set of 10 index cards labeled with the digits 0 through 9. She
puts them in a bag and selects one at random. The outcome that is most likely to occur is
selecting
a) | an odd number | c) | a number that is at most 5 | b) | a prime
number | d) | a number that is
divisible by 3 |
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15
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Which event has a probability of zero?
a) | choosing a letter from the alphabet that has line symmetry | c) | choosing a pair of
parallel lines that have unequal slopes | b) | choosing a number that is greater than 6 and is
even | d) | choosing a triangle
that is both isosceles and right |
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