Can you find the missing piece of the Porsche?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

Which alphabet is a part of our body?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

What can jump higher than a building?

Buy me, smell me or deliver me, I do not change.

Who am I?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Can you place three balls such that the equation shown in the picture holds true?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?