Can you calculate the probability of getting a sum of six when a dice is thrown twice?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

When it's bad luck to meet a black cat?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

What does this rebus riddle means ?

Why do people go to bed?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

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?

At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?