Find the smallest sentence with all the English alphabet.

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Solve the following series:
AZ, GT, MN, __, YB

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

You can see three almost identical images below. Can you spot the odd one out from them?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Eight Chelsea player makes the following statements :

1. Seven of us are lying here.
2. Six of us are lying here.
3. Five of us are lying here.
4. Five of us are lying here.
5. Four of us are lying here.
6. Three of us are lying here.
7. My name is Torres.
8. My name is Lampard.

The last two are Lampard and Torres or maybe Torres and Lampard.
So can you deduce which of the last two is Lampard or Torres?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H