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Even and Odd Numbers


  • The square of an odd number is always odd.

  • A number is said to be a prime number if it is divisible only by itself and unity.

  • The sum of two odd number is always even.

  • The difference of two odd numbers is always even.

  • The sum or difference of two even numbers is always even.

  • The product of two odd numbers is always odd.

  • The product of two even numbers is always even.