What is harder to catch the faster you run?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

What is the end of everything?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

If six children and two dogs were under an umbrella, how come none of them got wet?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What can go through glass without breaking it?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.