Topic Details (Notes format)

How to Calculate Probability of Simple Events

Subject: Mathematics

Book: Maths Mastery

Probability quantifies how likely an event is to occur, calculated by favorable outcomes ÷ total possible outcomes. For instance, flipping a fair coin yields two possible outcomes: heads or tails. The probability of heads is 1/2. When rolling a six-sided die, the probability of rolling a 4 is 1/6. Basic probability helps you analyze games of chance, forecast risk in business, or interpret scientific experiments. Mastery of this fundamental approach sets the stage for more complex topics like compound events, conditional probability, and statistical inference.

Practice Questions

What is the area of an equilateral triangle with side length 10 cm?

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If sin(A) = 1/2 and A is acute, what is the value of A?

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If a = 5 and b = 12, what is the length of the hypotenuse of a right triangle?

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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 ratio of two numbers is 3:5 and their HCF is 4, what are the numbers?

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What is the square root of 0.25?

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What is the sum of the interior angles of a hexagon?

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If a cone has a radius of 5 cm and a height of 12 cm, what is its slant height?

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What is the sum of the first 50 positive integers?

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A cube has a side length of 4 cm. What is its volume?

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