Can you find out the missing number in the grid?

What will you call your mother's brother's brother-in-law?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

Can you fill the blank with the correct number?

6 30 870 756030 _____

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

What does this rebus mean?

O
N
C
E
TIME

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?