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

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What am I?

You can see three almost identical images below. Can you spot the odd one out from them?

What does a man do only once in his lifetime, but women do once a year after they are 29?

What is wrong in the below Picture?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?