Mathematics

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Across
  1. 6. Algebraic expression counting
  2. 7. symbol denoting a quality or impression which can assume many values
  3. 12. Order does not matter
  4. 15. The counting element has no end
  5. 16. distinct set of an algebraic sum
  6. 17. It has same elements
  7. 18. No common element
  8. 19. Common elements
Down
  1. 1. Totality of elements under consideration
  2. 2. numerical coefficient
  3. 3. well defined real number that exactly 1 number
  4. 4. It has same number of elements
  5. 5. The exponent of a power indicates how many times the box multiplies
  6. 8. groupings does not matter
  7. 9. Collection of algebraic symbol represents a number
  8. 10. Any no or expression raised from 0 is equal to 1
  9. 11. real number assume exactly 1 value
  10. 13. It contains definite number of elements
  11. 14. well defined collection of distinct object