There are 5 red balls, 3 blue balls and 2 green balls in a box. Suzie takes at random a ball from the box and gives it to her friend. She then takes at
random another ball from the box.
2.1.1 Write down the sample space of this experiment.
[2]

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.