Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

How many triangles can you find in this given picture?

Which is heavier: a ton of bricks or a ton of feathers?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

What does an Island and the letter T have in common?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?