Probability Calculator

About Probability Calculator

Probability measures the likelihood that a particular event will occur. It is quantified as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty. This tool helps you calculate probabilities for simple scenarios and combined events.

How to Use?

Single Event

1. Enter the number of Favorable Outcomes (how many ways the specific event can happen).
2. Enter the Total Outcomes (total number of possible results).
3. The calculator will show the probability as a decimal and percentage.

Two Events

1. Enter the probability of Event A and Event B (between 0 and 1).
2. View results for different scenarios:
   • P(A and B): Probability that both happen (assuming independence).
   • P(A or B) - Mutually Exclusive: Probability that either happens (if they cannot happen together).
   • P(A or B) - Independent: Probability that either happens (if they are independent).

Features

• Single Event Mode: Calculate basic probability from raw numbers.
• Multiple Event Mode: Combine known probabilities of two events.
• Comprehensive Results: Shows decimal, percentage, and odds (for single events).
• Scenario Analysis: Handles both independent and mutually exclusive event logic.

FAQ

What is Probability?

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.

What are Mutually Exclusive Events?

Two events are mutually exclusive if they cannot occur at the same time. For example, a coin toss resulting in Heads OR Tails. The probability of either occurring is the sum of their individual probabilities.

What are Independent Events?

Two events are independent if the occurrence of one does not affect the probability of occurrence of the other. For example, rolling a die and flipping a coin.