# 4.8.2. Probability

In an experiment of tossing a die once and noticing the number on the upper side, what is the probability of getting a number that is divisible by 7?

• A1
• B
• C0
• D
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The weather forecast claims a chance of 0.3 for Monday, a chance of for Tuesday, a chance of 0.9 for Wednesday, and a chance of for Thursday to be sunny. Which day has the highest probability of being sunny?

• ATuesday
• BWednesday
• CMonday
• DThursday
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A boy flipped a coin 100 times, and he got heads 58 times. Calculate his probability of getting heads while playing this game.

• A0.42
• B0.5
• C0.58
• D0.7
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A box contains 100 apples. Some of them are bad and the others are good. If the number of bad apples is 32, calculate the probability of getting a good apple.

• A 0.51
• B 0.32
• C 0.5
• D 0.68
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A paper bag contains 7 circles, 6 squares, and 9 triangles. If a shape is randomly drawn from the bag, what is the probability of it being a circle?

• A
• B
• C
• D
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A box contains 5 blue balls, 6 black ones, 4 white ones, and 3 yellow ones. If a ball is randomly drawn, the probability of drawing a blue one .

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A box contains tickets with the numbers 1, 3, 9, 15, and 19 written on them. If a ticket is drawn at random, what is the probability of drawing a ticket with a number between 2 and 7?

• A
• B
• C
• D
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A jar contains 4 red marbles, 3 green ones, 5 blue ones, and 9 yellow ones. If a single marble is randomly chosen, determine the probability of choosing one that is NOT blue.

• A
• B
• C
• D
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In a class of 48 pupils, 28 pupils prefer football, 11 pupils prefer basketball, and the others prefer tennis. If a pupil is selected randomly, what is the probability of him preferring tennis?

• A
• B
• C
• D
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If the probability of a student's failure is 0.87, then the probability of his success is .

• A 1.87
• B 0.13
• C 0.97
• D 0.5
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What is the probability that a number selected from 19, 13, 18, 12, 11, and 5 is prime number?

• A
• B 4
• C
• D
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If a spinner numbered from 11 to 25 is spun, what is the probability of it landing on an even number?

• A 7
• B
• C
• D
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If one ball is chosen randomly from a set of balls numbered from 15 to 27, what is the probability of choosing a ball having an odd number on it?

• A
• B
• C
• D 7
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If the probability of the occurrence of an event is , determine the probability of its nonoccurrence.

• A
• B
• C1
• D
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Students’ grades in a science exam are 9, 1, 4, 6, 7, 3, and 10. If a student is selected randomly, what is the probability of him having a grade less than 1?

• A 1
• B 0
• C
• D
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4, 2, 5, 6, 1, 3, and 7 are the number of points scored by several players in a game. If a player is chosen randomly, what is the probability of him having scored more than 9 points?

• A 0
• B
• C
• D 1
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8, 6, 2, 3, 7, 5, and 9 are the number of points scored by several players in a game. If a player is chosen randomly, what is the probability of him having scored more than 4 points?

• A
• B
• C 5
• D 4
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A card is chosen at random from a set of cards having the numbers 5, 20, 11, 10, 7, and 15 on them. What is the probability of choosing a card having a number that is divisible by 8?

• A
• B 0
• C
• D 1
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In the figure below, the spinner is divided into 8 sections of different colours. Determine the probability that it stops at the red colour.

• A
• B
• C
• D
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If a ball was randomly drawn from a box contains 5 red balls, 2 yellow ones, and 4 black ones, find the probability of the chosen balls being red or yellow.

• A
• B
• C
• D
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