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

Next Number in the Series,

5, 16, 49, 104, ?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

What kind of tree can you carry in your hand?

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?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Can you find out the missing number in the grid?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?