# Puzzles

## 18 December

Today's number is the maximum number of pieces that a (circular) pancake can be cut into with 17 straight cuts.

## 15 December

If the numbers 1 to 7 are arranged

**7,1,2,6,3,4,5**then each number is either larger than or a factor of the number before it.How many ways can the numbers 1 to 7 be arranged to that each number is either larger than or a factor of the number before it?