Real Number System

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Across
  1. 1. number that can be expressed as a fraction
  2. 3. root number that produces a specified quantity when multiplied by itself
  3. 4. number that includes a real and an imaginary part
  4. 7. multiplicative inverse of a number
  5. 11. part of a whole expressed as a ratio
  6. 13. number that is a multiple of the imaginary unit
  7. 14. whole number that can be positive, negative, or zero
  8. 15. positive integer starting from 1
  9. 17. number with a fractional part separated by a dot
Down
  1. 2. distance of a number from zero
  2. 5. here's a crossword list on the topic of the Real Number System:
  3. 6. number that indicates how many times to multiply the base
  4. 8. any number that is not imaginary
  5. 9. inverse operation to exponentiation
  6. 10. Hawaiian glottal stop used in pronunciation
  7. 12. number that cannot be expressed as a fraction
  8. 16. number non-negative integer