MathDB

4

Part of 2014 Serbia JBMO TST

Problems(1)

There $100$ people seated at a round table $50$ women and $50$ men.

Source: Serbia JBMO TST 2014

10/6/2023
There 100100 people seated at a round table 5050 women and 5050 men. Show that there are two people of opposite gender that stay between two people of opposite gender. (WWMM, MMWW, WMWM, MWMW)
combinatorics