What has one letter and starts with an E?

Can you divide the below-given shape into four equal and identical pieces?

Prove that the below maths equation is true.

8 + 8 = 91

Below rebus represent famous DiCaprio movie. Can you name it?

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.

When can we add 2 to 11 and get 1 as the correct answer?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you solve the below algebraic mathematical equation?

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

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?