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Worksheet: Introduction to Probability

Q1:

Which of the following may be the probability of an event occurring?

  • A 4 5 9 %
  • B1.6
  • C 3 1 1 3
  • D 4 1 %

Q2:

What is the probability of a student riding a bike to school?

  • A0
  • B1
  • CBetween 0 and 1

Q3:

What is the probability of a certain event?

Q4:

Given that βˆ… represents the empty set, what is the value of 𝑃 ( βˆ… ) ?

Q5:

Let 𝑆 denote the sample space of a random experiment. Find 𝑃 ( 𝑆 ) .

Q6:

What is the sum of the probabilities of all of the outcomes in a random experiment?

Q7:

Which of the following choices may represent the probability of an event occurring?

  • A 1 9 7 %
  • B1.3
  • C βˆ’ 0 . 7
  • D 1 4 %

Q8:

What is the probability of a family visiting the beach in a given year?

  • A0
  • B1
  • CBetween 0 and 1

Q9:

What is the probability of rolling a number divisible by 7 on a regular dice?

  • A 1 6
  • B 7 6
  • C1
  • D0

Q10:

What is the probability of day coming after night?

  • Abetween 0 and 1
  • B0
  • C1

Q11:

What is the probability of rolling an even number on a fair die?

  • A 1 6
  • B 1 3
  • C 1 4
  • D 1 2

Q12:

Each section on this spinner is equally likely to be chosen. What is the probability of the arrow landing on the number 4? Give your answer as a fraction in the simplest form.

  • A 2 5
  • B0
  • C 4 5
  • D 1 5
  • E 2 3

Q13:

What is the probability of the pictured spinner stopping on a section which is red?

  • A 3 8
  • B 1 8
  • C 1 2
  • D 1 4

Q14:

What is the probability of the arrow landing on a section numbered by a perfect square when the given fair spinner is spun?

  • A 7 9
  • B1
  • C 3 4
  • D 7 8

Q15:

What is the probability that the pointer lands on a red section when the given fair spinner is spun?

  • A 1 4
  • B 1 8
  • C 1 2
  • D 3 8

Q16:

What is the probability of the pointer landing on a prime number when the given spinner is spun?

  • A 1 3
  • B 5 8
  • C 3 7
  • D 3 8

Q17:

What is the probability that the pointer stops on a green section when the given fair spinner is spun?

  • A 3 8
  • B 1 8
  • C 1 2
  • D 1 4

Q18:

What is the probability that the pointer lands on a section numbered by a factor of 7 when the given fair spinner is spun?

  • A 2 9
  • B 3 4
  • C 1 8
  • D 1 4

Q19:

What is the probability that the pointer lands on a number greater than 11 when the given fair spinner is spun?

  • A 3 8
  • B 5 8
  • C 4 9
  • D 1 2

Q20:

What is the probability that the arrow stops on a red section when the pictured fair spinner is spun?

  • A 3 8
  • B 5 8
  • C 4 9
  • D 1 2

Q21:

A spinner has 9 equal sections labelled from 1 to 9. Determine the probability of the pointer landing on 3.

  • A 2 9
  • B 1 3
  • C 2 3
  • D 1 9

Q22:

Which of the following may be the probability of an event occurring?

  • A 2 3 8 %
  • B1.8
  • C 9 9 5
  • D 7 9 %