Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Find the missing number in the image below.

My location can be determined by the below rebus.
So where am i ?

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.

If six children and two dogs were under an umbrella, how come none of them got wet?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find out the remainder when 3^300 is divided by 5?

What does this rebus puzzle means ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

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?