This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Replace the question mark with the correct number in below Picture:

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Prove that the below maths equation is true.

8 + 8 = 91