1 out of 3
I need a figure for the fish population in a lake. How does it help to catch and mark 40 fish?
1 out of 3
Can you work out the parentage of the ancient hero Gilgamesh?
2 out of 3
What fractions can you find between the square roots of 65 and 67?
2 out of 3
At the corner of the cube circular arcs are drawn and the area enclosed shaded. What fraction of the surface area of the cube is shaded? Try working out the answer without recourse to pencil and paper.
2 out of 3
The problem is how did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?
2 out of 3
What fraction of the volume of this can is filled with lemonade?
2 out of 3
Each letter represents a different positive digit AHHAAH / JOKE = HA What are the values of each of the letters?
2 out of 3
Weekly Problem 21 - 2012
Two rectangles are drawn in a rectangle. What fraction of the rectangle is shaded?
2 out of 3
Using an understanding that 1:2 and 2:3 were good ratios, start with a length and keep reducing it to 2/3 of itself. Each time that took the length under 1/2 they doubled it to get back within range.
2 out of 3
What is 50% of 2007 plus 2007% of 50?
