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 x + y = 10 and xy = 21, what is the value of x³ + y³?

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If a rectangle has a length of 10 cm and a width of 6 cm, what is its perimeter?

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

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If a number is divisible by 9, it is also divisible by which of the following?

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

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A man rows downstream at 6 km/h and upstream at 4 km/h. What is the speed of the stream?

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If a person can type 45 words per minute, how many words can they type in 2 hours?

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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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The base of a triangle is 10 cm and its height is 6 cm. What is its area?

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What is the sum of the first 20 odd numbers?

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