The Colored Socks
Ten red socks and ten blue socks are all mixed up in a dresser drawer. The twenty socks are exactly alike except for their color. The room is in pitch darkness and you want two matching socks. What is the smallest number of socks you must take out of the drawer in order to be certain that you have a pair that match?Entertainment Mathematical Puzzles by Martin Gardner
J. first reacted “why don’t turn on the light?” Then “who cares you wear two different colored socks.”
Think further, what if you have 3 colored socks, 4 colored socks, ….
A mother’s words: Maths is very abstract for children. Nevertheless, no matter we like it or not, no matter what we do, we need to put various factors together as we grow up. Maths helps us train our brains to think complicated issues altogether. Let’s help our children in maths.