If you say my name, I will no longer exist. What am I?

Complete the table series riddle by finding the number that can replace "??".

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?

It is always ahead of me yet I can never see it. What is it?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

The cream is heavier than Milk. True or False?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

How many times do a clock's hands overlap in a day ?