What English word has three consecutive double letters?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Why do people go to bed?

What is the last thing you take off before bed?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Why do we preferably have round manhole covers and not square ones?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?