Gardenclaw said:
A simple one.. Steve goes to the petrol station as his car is nearly empty of fuel. On a full tank his car normally does 400 miles. He fills the tank till it's full and sets off again. However after only 200 yards the car runs out of petrol and stops. Why?
He fills the tank with water or some other non fule substance
The tank he fills is not the one leading to his car's engine
His car explodes and rolls 200 yards before the flames consume the last of the petrol
My riddle (more of a logic question):
A monastery is filled with 100 perfectly logical monks.
These monks are sworn to silence and can not communicate with each other in any way.
Once a day all the monks eat in a communal dining area where they are seen and can see all other monks.
On the same night all the monks receive a holy vision that monks marked with a certain symbol on the back of their head must silently commit suicide in at the stroke of midnight in order to attain enlightenment.
The next day 51 monks awake with the symbol magically appearing on their head. Each monk does not know if they have the symbol on their head, however can see weather or not each of the other 99 monks has the symbol or not. Also each monk don't know the total number of monks that were given the symbol. They do know that all their fellow monks think exactly as they do.
Assuming no reflective surfaces in the monastery and no breaking their vows of silence, on which night do all the marked monks commit suicide? And Why?