## Another mathematical joke

**Referece: Prof. Ian Stewart’s cabinet of mathematical curiosities.**

An engineer, a physicist and a mathematician are staying in a hotel. The engineer wakes up and smells smoke. He goes in to the hallway, sees a fire, fills the waste paper basket from his room with water, and pours it into the fire, putting it out.

Later, the physicist wakes up and smells smoke. He goes into the hallway and sees a (second) fire. He pulls a fire hose off the wall, Having calculated the temperature of the exothermic reaction, the velocity of the flame front, the water pressure in the hose, and so on, he uses the hose to put out the fire with the minimum expenditure of energy.

Later, the mathematician wakes up and smells smoke. He goes into the hallway and sees a (third) fire. He notices the fire hose on the wall, and thinks for a moment…Then, he says, “Oh, a solution exists!” —- and goes back to bed.

🙂 🙂 🙂

Nalin Pithwa

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