Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

You need to move three matchsticks to form three squares. Can you do it?

What type of tree can I carry in my hand?

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?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Which country gets ill every time?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?