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Mathematical Sequences and Arrays Quiz
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What is a Riordan array?
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A triangular array of numbers where each entry is the sum of the two entries above it.
A triangular array of numbers where each entry is the product of the two entries above it.
A triangular array of numbers where each entry is the difference of the two entries above it.
A triangular array of numbers where each entry is the quotient of the two entries above it.
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