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

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

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What is the greatest common divisor (GCD) of 36 and 48?

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A sum of money doubles itself in 5 years at simple interest. What is the rate of interest?

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If a square has a perimeter of 64 cm, what is its area?

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What is the sum of all angles in a hexagon?

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If sin(A) = 3/5 and cos(B) = 5/13, where A and B are acute angles, what is sin(A+B)?

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If a = 4 and b = 5, what is the value of (a+b)^2?

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What is the sum of the first 50 positive integers?

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A square is inscribed in a circle with a radius of 5 cm. What is the area of the square?

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If x - y = 5 and x + y = 15, what is the value of x?

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