While browsing through the science section of our local A.B.C. bookshop, I leafed through the autobiography of Richard Feynman (1918-1988) titled 'Genius' by James Gleick.
Mathematics is full of unsolved problems and conjectures which attract the minds of many people, both amateurs and professionals.
Although there is a formula for solving cubic equations (see Parabola, 2nd issue 1989) it is rarely used in practice since it can be tricky to apply in even very simple cases.
- A large number of brown, green and yellow frogs are wandering around on an island.
Q.923 On and island there are 50 brown, 57 green, 62 yellow and 68 red frogs.