Multiple choice general knowledge math & puzzles

If the product of two integers is odd, Then the sum of those two integers must be ………

  1. Odd number

  2. Even number

  3. Prime number

  4. Perfect square

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the product of two integers is odd, then both integers must be odd (since even × anything = even). The sum of two odd numbers is always even: odd + odd = even. For example: 3 × 5 = 15 (odd), and 3 + 5 = 8 (even). The other options are not necessarily true.