1) A policeman with his dog and a couple with her two daughters and two sons were to cross a river. However only the policeman and the couple can operate the boat. The boat can only ferry two persons at any one time. The police cannot leave his dog behind because it bities everyone when the policeman is not guarding it. The father cannot leave his sons behind because the mother will beat the sons and vice versa for the dad to his daughter. So how do they cross the river?
2) A, B, C and D want to cross a bridge which can support 2 person at a time. Its at night and they have only one torch so two persons will go and 1 will come back with the torch for the rest. A walks 1 min, B walks 2mins, C walks 5 mins and D walks 10 mins. How do they all get to the bridge within 18 mins or below?
3) A man died and given a chance to be reborn in heaven and hell. He wanted to choose to go heaven but the two unlabelled doors (which were Heaven and Hell) were guarded by two persons. They were extreme honest and extreme liar. Honest will answer anything honest and no lies and vice versa for Liar who answers anything untruthful. The man was given a chance to approach either guy for 1 question only which they would only answer "Yes" or "No". So what should the man ask in order go to heaven?
solve them I know u can...