Find the value of "?" in the ball picture Riddle below:

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What is the fastest way to double your money?

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

Out of four images which one is the odd one out?

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?