Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

It is always ahead of me yet I can never see it. What is it?

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

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with an empty pot as the queen of the empire. Why?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

The centre of the third figure is empty. What digit should fit inside?

When does a USA Potato change its nationality?

Can you count the number of squares in the given picture?