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 the length of a rectangle is doubled and the width is halved, what is the change in area?

View Question

If a right triangle has legs of 9 cm and 12 cm, what is the length of the hypotenuse?

View Question

What is the slope of a line passing through the points (2, 3) and (4, 7)?

View Question

A number is increased by 20% and then decreased by 10%. What is the net change?

View Question

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

View Question

What is the length of the diagonal of a square with a side length of 7 cm?

View Question

If the sum of three consecutive integers is 96, what are the integers?

View Question

If the angles of a triangle are in the ratio 2:3:4, what is the measure of the largest angle?

View Question

A car travels 240 km in 4 hours. What is its average speed?

View Question

A rectangle has an area of 48 cm² and a length of 8 cm. What is its width?

View Question