Puzzle 74 - Solutions

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 Here were some simple puzzles

The solutions are as follows

  1. The numbers whose product  = their sum are 1,2 and 3. Do you know any more sets?
  2. There are 3 books to the left of the given book and 8 to the right. So totally 3+8+1 = 12 books are there.
  3.  99 + 9/9 = 100. If you like to arrange numbers to get a target number, have a look at my countdown game
  4. Of course, he was born on 29th of February and his birthday arrived only once in 4 years.

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