[b]p1.[/b] You have bought a box which contains six unsharpened pencils. Is it possible to arrange them so that every pair of pencils touch.


[b]p2.[/b] Is it possible to put $54$ rabbits in $10$ cages so that every pair of cages have a different number of rabbits, and each cage contains at least one rabbit?


[b]p3.[/b] The year $1983$ had $53$ Saturdays. What day of the week was January $1$, $1983$?


[b]p4.[/b] Suppose  you play the following game with a friend: Your friend picks a whole number between $1$ and $100$. You choose a number and ask your friend to compare it with his number. He tells whether your number is bigger, smaller , or equal to his. Tell how you can always guess his number in no more than seven tries.


PS. You should use hide for answers.
### Problem 1
1. To determine if it is possible to arrange six unsharpened pencils so that every pair of pencils touches, consider the geometric arrangement of the pencils.
2. Imagine the pencils as cylinders. For every pair of pencils to touch, they must be arranged in a way that each pencil is in contact with every other pencil.
3. A common arrangement that satisfies this condition is to place the pencils in a triangular prism configuration. In this arrangement, three pencils form a triangular base, and the other three pencils are placed on top of them, also forming a triangular base. Each pencil in the top layer touches each pencil in the bottom layer.

Thus, it is possible to arrange six unsharpened pencils so that every pair of pencils touches.

The final answer is \( \boxed{ 2^7 > 100 } \).