Probability Concepts and Calculations

Miss Hughes introduces simple probability, explaining how to calculate the probability of events using examples like rolling a fair dice. She covers the probability of getting odd, even, and prime numbers, and uses Venn diagrams to illustrate probability concepts. Important rules such as complementary events and intersections are discussed, providing a comprehensive understanding of basic probability.

What is the basic formula for calculating the probability of an event?

• Total possible outcomes minus number of favorable outcomes

• Total possible outcomes divided by number of favorable outcomes

• Number of favorable outcomes divided by total possible outcomes

• Number of favorable outcomes multiplied by total possible outcomes

How many possible outcomes are there when rolling a fair dice?

• 4

• 5

• 7

• 6

What is the probability of rolling an odd number on a fair dice?

• 1/6

• 1/3

• 1/2

• 1/4

Which number is the only even prime number?

• 3

• 2

• 1

• 4

What is the probability of rolling an even prime number on a dice?

• 1/6

• 1/3

• 1/2

• 1/4

Which of the following is not an odd prime number?

• 7

• 1

• 3

• 5

What is the probability of rolling an odd prime number on a dice?

• 1/4

• 1/2

• 1/3

• 1/6

How many numbers on a dice are either prime or even?

• 3

• 4

• 5

• 6

What is the probability of rolling a number that is either prime or even?

• 1/6

• 2/3

• 5/6

• 1/2

What does a Venn diagram help visualize in probability?

• The total number of outcomes

• The number of prime numbers

• The relationship between different sets

• The probability of a single event