What is both possible and impossible at the same time?

Can you place three balls such that the equation shown in the picture holds true?

If a wheel has 54 spokes, how many spaces are there between the spokes?

what does this below rebus represent identXQQQQQME

What is so fragile that saying its name breaks it?

I always drive my customer away.

Who am I?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

I have Rs.50 and I spend it in the way as below.

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.