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

What does below Rebus mean ?

esgg sgeg gegs gsge

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?