What is the coolest letter in the alphabet?

What does below Rebus say?

XLR8

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

Keyboard words are not in alphabetical order, Why?

What has no start, end, or centre?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

Take one out and scratch my head, I am now black but once was red. What am I?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?