Egyptian coin. Mindfulness Challenge
An archeologist claims he found a Roman coin dated 46 B.C. in Egypt.
Note: Roman coins can really be found in Egypt
How much should...
How to get a million dollars
You are on a game show.
You are standing before two doors.
Behind one is 1 million dollars, and behind the other is a donkey.
There are...
Life-saving decision for the ship and crew
A Navy sailor on the deck of a cruiser noticed an naval mine in the water directly in the path of the ship. With...
The mystery of frost on the window
A guy was found dead in his study by his friend. The victim’s friend called the police.
He told them that when he was walking...
Spartacus creative solution
Spartacus had been surrounded and locked by the Roman cohorts at the top of Mount Vesuvius. A huge army stood in front of him and a deep chasm...
Survivorship bias and the flip side of things
During World War II, the Hungarian mathematician Abraham Wald, who worked in the SRG laboratory in New York, considered how to minimize bomber losses...
King Akbar’s Line
One day the Great Akbar drew a line on the floor and asked his sage Birbal to shorten it without touching and wiping out...
Don’t Rush To Change The World
Once upon a time, there was a king who ruled a prosperous country. One day, he went for a trip to some distant areas...
Fateful creative solution
One unfortunate merchant owed a large sum of money to a moneylender.
The old, ugly moneylender proposed that he would forget the debt
if...
Water Crossing By Rope
The deep round lake is 200 meters in diameter. In the middle of the lake there is an island where a tree grows. There...
A challenge for the fisherman – solution of practical problem
One fisherman bought himself a new fishing rod with 5 feet long.
He has to commute home by public transport, where it is forbidden to...
Ship Ladder Puzzle
A ship is at anchor. Over its side hangs a rope ladder with rungs a foot apart. The tide rises at the...