Puzzles

1. A boy found 2 sheets of a newspaper. One sheet was numbered 1-2-71-72, the other was numbered 13-14-?-?. The other two numbers had been torn off. What were they
2. I have placed the numbers 1, 2, and 3 at the vertices of a triangle. Arrange 4, 5, 6, 7, 8, and 9 along the sides of the triangle so that the numbers along each side add to 17.
   

   
3. Purrer has decided to take a nap. He dreams he is encircled by 13 mice: 12 gray and 1 white. He hears his owner saying: “Purrer, you are to eat each thirteenth mouse keeping the same direction. The last mouse you eat must be the white one.”Which mouse should he start from?