An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Choose any three by three square of dates on a calendar page...
Investigate how you can work out what day of the week your birthday will be on next year, and the year after...
1 wuggle = 6 waggles;
2 woggles = 5 waggles;
4 wiggles = 3 woggles = 7.5 waggles.
All are therefore greater than 3 waggles.
This problem is taken from the UKMT Mathematical Challenges.