What does does this rebus picture means ?

What is at the end of a rainbow?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

My location can be determined by the below rebus.
So where am i ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Identify The phrase in the picture.

Can you find the key in the picture below?

Mr. Buttons was all set to go to the village of Buttonland to meet his friend. So, he packed his bags and left for the village at 5 in the morning. Upon travelling on a road for miles, he came across a point where the road diverged into two. He was confused on which road to take. He gazed around and he saw two owls sitting on a branch. He thought he could ask for directions for the village from the two owls. So he went to the tree. There he saw a sign which read, "One owl always lies, and one is always truthful. They both fly away if you ask them more than 1 question."
Mr. Buttons was caught in the dilemma of what to ask? And from which owl to ask, since he only had one question. What should Mr. Buttons ask?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?