What is the next number in this series?

4,12,84,3612....

Count the number of triangles in the given picture.

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

Why do people go to bed?

If a wheel has 54 spokes, how many spaces are there between the spokes?

I am the fastest animal but cannot climb the tree. What am I?

Why is the Hole below a Lock?

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?

Find the number of squares in the below picture