Brainteasers

5th September 2003 at 01:00
Age 8-11

Counting triangles

What is the total number of triangles of any size you can see?

Age 11-14

Mashed potatoes

Jay and Joy are peeling potatoes for a dinner party.

They each start with the same number of potatoes to peel.

Every minute, each of them peels 2 potatoes, and Jay surreptitiously throws one of his unpeeled potatoes on Joy's pile.

After 10 minutes, Joy has three times as many potatoes still to peel as Jay.

How many potatoes did each of them start with?

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number

Comments

The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now