Multiple choice general knowledge math & puzzles

When y = 3, which of the following is FALSE?

  1. y is prime and y is odd

  2. y is odd or y is even

  3. y is not prime and y is odd

  4. y is odd and 2y is even

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

If y = 3: (a) 3 is prime and odd (True). (b) 3 is odd (True), so the 'or' statement is True. (d) 3 is odd and 6 is even (True). (c) 'y is not prime' is False, and 'y is odd' is True; 'False and True' results in False.