64 with 2 4s

Using only two 4’s how would you get 64? You can use standard mathematical functions found on a calculator – plus, minus, multiply, divide, to the power, log, square root, factorial…. Cannot use trigonometry or any other digit.

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28 March 2011

Second lap speed

You drive a car 30 mph on a 1 mile lap. How fast must you drive the 2nd lap to average 60 mph for both laps?

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10 March 2011

Two trains colliding

A bullet train starts from Atlanta to San Diego at 200mph. A freight train starts an hour later from San Diego for Atlanta at 80 mph. When they meet, which train is closer to Atlanta? (note that the actual distance does not really matter)

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1 February 2011

Bela Bose

Found it on the internet. Hilarious. You have to know the original Bengali song called “2441139”. As I read this the tune was automatically playing in my mind. Made it even more funny….