why number 8549176320 is one of a kind?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What jumps when it walks and sits when it stands?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

James Bond is caught up in a mysterious scenario where the evil villain has him blindfolded. He somehow breaks through the handcuffs but is unable to get the blindfold off. Upon searching, he comes across a bow and 3 arrows. He can hear the villain speak, and thus tries to take a shot at him. He launches the first arrow, it misses the villain. He then launches the second arrow and it misses by a greater margin.

What is the probability that this third shot our James bond takes will be worse than the second shot?

There are forty elephants and they have forty-fore heads. How can this be possible?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?