There is a mass killing arrangement in a circular conference table. there are 'n' seats and the seats are numbered. person in 1st chair got a knife. if a dispute occurs during the conference, he will kill the person having seat no 2 and pass the knife to seat no 3. 3 will kill 4th and pass it to 5 and so on. clearly, only 1 person will be left after the mass killing process. The above example can be illustrated as - 1,2,3,4,5 Round 1: 1 Kills 2 3 kills 4 5 left so next round begins from 5 Round 2: Left1,3,5 5 kills 1 3 left so next round begins from 3 Round 3: Left 3,5 Finally 3 is the Gladiator!!!