I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

What do you answer even though it never asks you questions?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Can you count the number of matches in the picture below ?

What's the only room from which no one can enter or leave