NUMBER SYSTEMS

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Across
  1. 4. The smallest prime number is.....
  2. 5. Difference of smallest even number and prime number....
  3. 6. The numbers which have only two factors......
  4. 7. The numbers which are exactly divisible by 2......
  5. 9. All whole numbers and their negatives together....
  6. 10. All counting numbers are called...
Down
  1. 1. The numbers which have more than two factors......
  2. 2. Collection of natural numbers including zero.....
  3. 3. Smallest composite number is...
  4. 8. The number which are not exactly divisible by 2....