Which is faster, Heat or Cold ? Explain.

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

Why is a river so rich ?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Look at the picture and find out which square is not linked with any of the other squares.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

Can you find the 09 errors in the picture below?

When it is alive we sing, when it is dead we clap our hands. What is it?

Keyboard words are not in alphabetical order, Why?