What does this simple rebus mean?

What word begins and ends with an E, but has only one letter?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What number when divided in half becomes zero?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

Can you find the company name in the pictogram below?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?