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Small pepper seedlings in turquoise pots.
problem

Rectangle Cutting

14 to 16

Tom and Jerry start with identical sheets of paper. Each one cuts his sheet in a different way. Can you find the perimeter of the original sheet?

Small pepper seedlings in turquoise pots.
problem

Roll On

14 to 16

Weekly Problem 5 - 2006
How many times does the inside disc have to roll around the inside of the ring to return to its initial position?

Small pepper seedlings in turquoise pots.
problem

From Point to Point

14 to 16

Can you combine vectors to get from one point to another?

Small pepper seedlings in turquoise pots.
problem

Oh so Circular

14 to 16

The diagram shows two circles and four equal semi-circular arcs. The area of the inner shaded circle is 1. What is the area of the outer circle?

Small tomato seedlings in yellow pots.
problem

Phone Call

14 to 16

How many different phone numbers are there starting with a 3 and with at most two different digits?

Small pepper seedlings in turquoise pots.
problem

Very Long Line

14 to 16

If the line on the right were 0.2mm thick, how long would it need to be to cover an area of one square metre?

Small pepper seedlings in turquoise pots.
problem

Salt's Mill

14 to 16

A window frame in Salt's Mill consists of two equal semicircles and a circle inside a large semicircle. What is the radius of the circle?

Small tomato seedlings in pink pots.
problem

So Many Sums

11 to 14

In this addition each letter stands for a different digit, with S standing for 3. What is the value of YxO?

Small pepper seedlings in turquoise pots.
problem

Folded A4

11 to 14

What shapes can be made by folding an A4 sheet of paper only once?

Small pepper seedlings in turquoise pots.
problem

Altitude Inequalities

14 to 16

Weekly Problem 8 - 2010
Are you able to find triangles such that these five statements are true?

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