Which wheel of car does not rotate when you turn your car right?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

I am an odd number. Take away a letter and I become even. What number am I?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

When we see 2 but call 10?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

What goes up but never comes down?

What is the centre of gravity?

How could a baby fall out of a twenty-story building onto the ground and live?

How many triangles are there on the puzzle below?