Consider the selection of a thirteen card bridge hand. This is a combination.
Combinations are ways to choose elements from a collection in mathematics where the order of the selection is irrelevant. Let's say we have a trio of numbers: P, Q, and R. Then, combination determines how many ways we can choose two numbers from each group.
A combination in mathematics is a choice made from a group of separate elements where the order of the selection is irrelevant.
Dempster's rule of combination is a formula for combining two or more belief functions. When the combined belief functions are based on different or "independent" sources of information, the formula intuitively equates to pooling of evidence.
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