What does below Rebus say?

XLR8

What is always in front of you but can’t be seen?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What do you answer even though it never asks you questions?

You need to arrange three 7 and mathematical symbols to form number 1?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Replace the question mark with the correct number in the below-given picture?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Which Burger Is Different in below image?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?