If eleven plus two equals one, what does nine plus five equal?

A bomb exploded in a room full of married couples and no one died. How?

Prove that the below maths equation is true.

8 + 8 = 91

Take one out and scratch my head, I am now black but once was red. What am I?

Count the number of triangles in the below picture?

No matter how little or how much you use me, you change me every month. What am I?

John was drowned by he was not wet. How?

What is so fragile that saying its name breaks it?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E