How Well Do You Know Sequences and Series?

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Across
  1. 2. symbol used to indicate summation
  2. 4. sum of a part or the entire sequence
  3. 6. a series whose sum tends to a specific number
  4. 7. 2,4,6,8,...
  5. 9. 1,-1,1,-1,1,...
Down
  1. 1. a series that typically goes to infinity
  2. 2. list of numbers in order
  3. 3. contracted form of series
  4. 5. sequence written as a formula
  5. 8. each number in a sequence