Probability Calculator

This Probability Calculator helps you find the probability of an event and shows each step clearly. It works by dividing the number of favourable outcomes by the total number of possible outcomes. This makes it useful for checking answers, understanding how probability is calculated, and practising statistics and probability step by step.

Step-by-step method

1. Identify the favourable outcomes and total outcomes.
2. Use the probability formula.
3. Substitute values and simplify the fraction.

Formula:

Example 1: f = 3, n = 12

Step 1 - Identify the favourable outcomes and total outcomes.

In this problem: The given values are f = 3 and n = 12.

Step 2 - Use the probability formula.

In this problem: Use the formula P = f ÷ n (favourable outcomes divided by total outcomes).

Step 3 - Substitute values and simplify the fraction.

In this problem: Substitute: P = 3 ÷ 12. Simplify by dividing both by 3: 1/4.

Final answer: P = 1/4 = 0.25

Example 2: f = 4, n = 7

Step 1 - Identify the favourable outcomes and total outcomes.

In this problem: The given values are f = 4 and n = 7.

Step 2 - Use the probability formula.

In this problem: Use the formula P = f ÷ n (favourable outcomes divided by total outcomes).

Step 3 - Substitute values and simplify the fraction.

In this problem: Substitute: P = 4 ÷ 7. Simplify by dividing both by 1: 4/7.

Final answer: P = 4/7 = 0.57142857