I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Which five letter word can be added at the end of below word to form a
valid word?

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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.

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?