There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

What is so fragile that saying its name breaks it?

What number should come in place of the question mark below?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What four weights can be used to balance from 1 to 30 pounds?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?