mathematics

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Across
  1. 2. a constant that approximately equals to 2.71828
  2. 3. a mathematical technique that determines the number of possible arrangements in a set when the order of the arrangements matters.
  3. 5. no three positive integers a, b, and c satisfy the equation a^n + b^n = c^n for any integer value of n greater than 2.
  4. 8. a sequence in which each number is the sum of the two preceding ones
  5. 10. the ratio of opposite length and hypotenuse in a right angle triangle
Down
  1. 1. numbers that cannot be expressed as the ratio of two integers
  2. 4. the field of mathematics that focuses on infinitesimal changes
  3. 6. elementary aspects of the theory of numbers
  4. 7. a branch of mathematics that studies relationships between side lengths and angles of triangles
  5. 9. general formula of quadratic equation