Topic Details (Notes format)

How to Calculate Probability of Independent Events

Subject: Mathematics

Book: Maths Mastery

Independent events do not influence each other’s outcomes—like flipping a coin and rolling a die simultaneously. For two independent events A and B, the probability that both occur is P(A) × P(B). If P(A) = 1/2 (coin landing heads) and P(B) = 1/6 (die showing 3), then the combined probability is (1/2) × (1/6) = 1/12. Mastering independent event calculations is essential for interpreting multi-step experiments, analyzing random processes, or modeling real-world phenomena where outcomes remain unaffected by previous events.

Practice Questions

The probability of rolling a sum of 7 with two dice is:

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If a cylinder has a radius of 7 cm and height of 10 cm, what is its volume?

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If the perimeter of a square is 40 cm, what is the area of the square?

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If the sum of three consecutive integers is 72, what are the integers?

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A rectangle has a length of 10 cm and a width of 5 cm. What is the diagonal of the rectangle?

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The probability of getting an even number when rolling a die is:

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What is the LCM of 15 and 20?

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The perimeter of a rectangle is 40 cm, and its length is 12 cm. What is its width?

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What is the sum of all angles in a hexagon?

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What is the remainder when 5^100 is divided by 3?

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