what does this picture(rebus) riddle means ?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What has a ring but no finger?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

I’m tall when I’m young, and I’m short when I’m old. What am I?