I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?

Complete the table series riddle by finding the number that can replace "??".

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

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.

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

What is the centre of gravity?

Which wheel of car does not rotate when you turn your car right?

what's the probability of getting a king or a queen from a pack of 52 cards?