Can you make a tetrahedron whose faces all have the same perimeter?
A group of 20 people pay a total of £20 to see an exhibition. The admission price is £3 for men, £2 for women and 50p for children. How many men, women and children are there in the group?
Three circular medallions fit in a rectangular box. Can you find the radius of the largest one?
Tony (State College Area High School,
PA, US) and David (The Lawrenceville School, USA) both cracked this
problem.Tony and David's
solutions were almost identical.