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

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

What breaks yet never falls, and what falls yet never breaks?

Why Aeroplane windows are round?

By using 'because' continuously three times, can you make an English statement ?

How can a man go eight days without sleep?

I am sure no one can have two things for dinner. what are they?

What do you get if you add 2 to 100 four times?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?