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problem

Essential Supplies

14 to 16

Chocolate bars come in boxes of 5 or boxes of 12. How many boxes do you need to have exactly 2005 chocolate bars?

problem

Eyelids

14 to 16

Can you work out the shaded area surrounded by these arcs?

problem

Missing Digit

11 to 14

What digit must replace the star to make the number a multiple of 11?

problem

Walking, Running, Cycling

11 to 14

Weekly Problem 44 - 2006
How long does it take an athelete to walk, cycle and run three miles if this is 10 minutes slower than cycling the whole distance?

problem

Graphical Triangle

14 to 16

What is the area of the triangle formed by these three lines?

problem

Square LCM

14 to 16

Using the hcf and lcf of the numerators, can you deduce which of these fractions are square numbers?

problem

Painted Purple

14 to 16

Three faces of a $3 \times 3$ cube are painted red, and the other three are painted blue. How many of the 27 smaller cubes have at least one red and at least one blue face?