What can you deduce from the following BrainBat?

CRY
LMKI

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

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

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Replace the question mark with the number below given a simple math problem.

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?