Can you find the missing piece of the Porsche?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

What can you hold in your right hand, but never in your left hand?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

Identify the 10 differences between the two given pictures.

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

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

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?