What does this rebus riddle means ?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Can you count the number of triangles in the picture below?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Find the number of squares in the below-given picture.

Find the hidden panda in the image below.

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?