What does the below rebus riddle means?

Can you solve the below rebus?

What word is represented by this rebus?

In the image given, you can find several triangles. Can you count them all?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

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?

Find the hidden panda in the image below.

Which is Odd One Out and why?

4377

3954

9862

8454

9831

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?