PERMUTATIONS AND COMBINATIONS
PROBABILITY OF EVENTS
Rules
Formula
Definition
The probability of an event is the measure of the chance that the event will occur as a result of an experiment.
Examples
PROBABILITY OF UNION OF EVENTS
Rules
Formula
Definition
Suppose A and B are two events associated with a random experiment. Then the union of A and B is represented by A ∪ B. The probability of union of two events is given by: P(A∪B) = P(A)+P(B) – P(A∩B) Here, P (A) is the probability of event A, P (B) is the probability of event B.
Example
PROBABILITY OF MUTUALLY EXCLUSIVE EVENTS
Rules
Formula
Definition
Two events are mutually exclusive if they cannot occur at the same time. Another word that means mutually exclusive is disjoint. If two events are disjoint, then the probability of them both occurring at the same time is 0.
Example
PERMUTATIONS
Rules
Formula
Definition
Several possible variations, or ways, in which a set or number of things may be arranged, aligned, or ordered in a manner.
Example
COMBINATIONS
Rules
Formula
Subtopic
Definition
Combinations is unlike permutations. it is the selection of given things without the need of a specific arrangement.
Example
Subtopic
PROBABILITY
Rules
Definition
Probability is a numerical description of how likely an event is to occur or how likely it is that a proposition is true.
Formula
Subtopic
Example
RULES
