Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

What word is represented by this rebus?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

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 ()

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

What begins with T, ends with T, and has T in it?

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?