Brain Teaser 11

Puzzle 1: 14 students in a class failed in both QT and Accounts. 20 failed in QT, but 32 failed in Accounts. How many students were there in total?

Puzzle 2: Solve this puzzle:

S is as much older than K as he is younger than P. N is as old as K .Which of the following is wrong?

  1. K is younger than P.
  2. N is younger than P.
  3. S is older than N.
  4. P is not the oldest.
  5. K is younger than S.

Puzzle 3: If two’s company, and three’s a crowd, what are four and five?

Puzzle 4: If you have it, you want to share it. If you share it, you don’t have it. What is it?

Puzzle 5: If you threw a White stone into the Red Sea, what would it become?