Not quite a riddle.
If you can answer this correctly, you are only 9 more right answers away from getting a position as a Quantitative Modeler/Analyst, with a prestigious electronic brokerage firm, for a tidy rate of $125/hour.
A brick weighs a pound plus 1/2 a brick. How much does the brick weigh?
The correct answer will force me to post Question #2 (of 9)
Having not looked at the thread for answers, the answer to this is 2 pounds. x = 1 + .5x, solve for x -> x = 2
Question #2 on Quant Analyst test
2. Could a stack of pennies as high as the C.N. Tower fit into a 2x2x2 foot box? (A penny has a radius of 3/8 inch, and the C.N. Tower is 1900 feet high)
a correct answer post will lead to Question #3
This is comparing volumes.
The stack of pennies is, ideally, a cylinder. We know that volume it's volume is area * height, which means V = h*pi*r^2. With a radius of 3/8ths of an inch, that gives us V = 1900*pi*(0.03125ft^2) = 5.82912699397 ft^3
The box is 2x2x2, which gives us a volume of 2^3 = 8 ft^3
Thus, we can conclude that yes, the stack of pennies will fit inside the specified box.