You may also like

problem icon

Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

problem icon

Calendar Capers

Choose any three by three square of dates on a calendar page...

problem icon

Days and Dates

Investigate how you can work out what day of the week your birthday will be on next year, and the year after...

Alphabetical Discovery

Stage: 2 and 3 Short Challenge Level: Challenge Level:1
In the word DISCOVER the distinct pairs of letters DC, IE, SO, VR occur in reverse alphabetical order, so we must delete at least one of the letters in each pair, in other words remove at least four letters. In fact this is all we need to remove e.g. DISV is in alphabetical order.

This problem is taken from the UKMT Mathematical Challenges.