self
Maths Puzzle
An old man goes to a bank with a check of $200 and asks the cahier "Give me some one-dollar bills, ten times as many twos and the balance in fives!".
What will the cashier do?
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self Other Question
A balloon propelled by some mechanical device travels five miles in ten minutes with the wind, but requires one hour to go back again to the starting point against the wind, how long would it have taken to go the whole ten miles in a calm, without any wind?
Many years ago, when Barnum's Circus was of a truth "the greatest show on earth" the famous showman got me [Sam Loyd] to prepare for him a series of prize puzzles ... Barnum was particularly pleased with the problem of the cat and dog race ...
"A trained cat and dog run a race, 100 feet straightaway and return. The dog leaps three feet at each bound and the cat but two, but then she makes three leaps to his two. Now, under those circumstances, what are the probabilities or possibilities in favor of the one that gets back first?"