pascals triangle

Pascal's triangle

noun Mathematics.
a triangular arrangement of the binomial coefficients of the expansion (x + y ) n for positive integral values of n.

Origin:
named after Pascal

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World English Dictionary
Pascal's triangle
 
n
a triangle consisting of rows of numbers; the apex is 1 and each row starts and ends with 1, other numbers being obtained by adding together the two numbers on either side in the row above: used to calculate probabilities
 
[C17: named after Blaise Pascal]

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