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Different rectangles
problem

Different Rectangles

14 to 16
Can you draw two different rectangles, whose diagonal is represented by the same vector?
Small tomato seedlings in pink pots.
problem

Powerful Zeros

14 to 16

How many zeros are there at the end of $3^4 \times 4^5 \times 5^6$?

Small tomato seedlings in pink pots.
problem

Largest Expression

14 to 16

Which of these five algebraic expressions is largest, given $x$ is between 0 and 1?

Small tomato seedlings in pink pots.
problem

Information Display

11 to 14

The information display on a train shows letters by illuminating dots in a rectangular array. What fraction of the dots in this array is illuminated?

Small tomato seedlings in pink pots.
problem

Recurring Mean

14 to 16

What is the mean of 1.2 recurring and 2.1 recurring?

Small pepper seedlings in turquoise pots.
problem

Diagonal Division

11 to 14

Weekly Problem 45 - 2008
The diagram shows a regular pentagon with two of its diagonals. If all the diagonals are drawn in, into how many areas will the pentagon be divided?

Small tomato seedlings in yellow pots.
problem

Satnav Dilemma

11 to 14

How many routes are there in this diagram from S to T?

Small pepper seedlings in turquoise pots.
problem

Hexa-Split

11 to 14

Which of the areas shown in the hexagons are equal to each other?

Small pepper seedlings in turquoise pots.
problem

Thunder and Lightning

11 to 14

How far away was the lightning if the flash and the thunderclap were 6 seconds apart?

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