What does this simple rebus mean?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

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

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

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

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?