The benefits of capacity seeing yourself through the eyes of others

Three hats are offered to two players – one white and two red. They close their eyes and are told that each of them will...

Time measurement task

A man has two ropes of varying thickness (Those two ropes are not identical, they aren’t the same density nor the same length nor...

How to make a million dollars by simple solution

In the States there were two large firms engaged in the publication of yellow pages every month. Many office workers bought two directories at...

The Fair strategy

Two people are attempting to divide a cake into two equal pieces. However, no matter where one person places the knife, the other person says...

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...

Birbal’s Wise Decision – example of creative problem solving

A farmer and his neighbour once went to Emperor Akbar's court with a complaint. "Your Majesty, I bought a well from him," said the farmer...

Measuring the Great Pyramid

While the famous Greek philosopher Thales of Miletus was in Egypt, he was asked to find out the height of the Great Cheops pyramid. How could...

Napoleon’s creative solution

In 1804, Napoleon Bonaparte desired to take the title of Emperor in order to possess a great Western empire, just as his idol Charles...

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...

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...

The Light Switches Riddle

There are three switches outside a closed room. There are three lamps inside the room. You can flip the switches as much as you...

Say everything in one sentence

Once upon a time, in the West Lake village, a servant lived with his master. After service of about 30 years, his master became...