Mathematical Sequences and Arrays Quiz

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Multiple Choice

What is a Riordan array?

  1. A triangular array of numbers where each entry is the sum of the two entries above it.
  2. A triangular array of numbers where each entry is the product of the two entries above it.
  3. A triangular array of numbers where each entry is the difference of the two entries above it.
  4. A triangular array of numbers where each entry is the quotient of the two entries above it.
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