Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

how come the second man dies?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Solve the rebus riddle in the picture below.

On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

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

O T T F F S S ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?