A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Buy me, smell me or deliver me, I do not change.

Who am I?

There is a bag which have 21 blue balls and 23 red balls. You also have 22 red balls outside the bag. Randomly remove two balls from the bag. * If they are of different colors, put the blue one back in the bag. * If they are the same colour, take them out and put a red ball back in the bag. Repeat this until only one ball remains in the bag. What is the color of the sole ball left in the bag ?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

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

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

When is the top of a mountain similar to a savings account?

Which five letter word can be added at the end of below word to form a
valid word?

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It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?