Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Who always enjoys poor health?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

Do You See It?

How could a baby fall out of a twenty-story building onto the ground and live?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?