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

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Spot what is wrong here in below Picture?

How many words can a pen with half refill write?

What has hands, but can’t clap?

Where do you go to learn how to make ice cream?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.