Maths Crossword Puzzle

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Across
  1. 4. name the property in which a(b+c)=ab+ac
  2. 7. one or more outcomes of an experiment make an
  3. 9. equal to sign(=)is missing in
  4. 10. is called the identity for the addition of rational numbers
  5. 12. difference between lower class and upper class limit is
  6. 13. The information collected in all such cases is called
Down
  1. 1. a part of number that do not include fractions, decimals, negative number
  2. 2. ________inverse of 21/112 is -21/112
  3. 3. graph in which pictorial representation of data using symbols
  4. 5. number that can be written without a fractional component
  5. 6. gives the number of times that a particular entry occurs.
  6. 8. jagged line used along the horizontal line in graph is called
  7. 11. data available to us in an unorganized form is Called