Which number should replace the question mark?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

A man is surviving on an island along with his friend. They have been starving for four days for food. Suddenly, they find a fisherman. The friend goes with the fisherman in order to catch the fish (if they can find any).

The fisherman returns after some time but he is alone and has some salmon that he had prepared. When asked, the fisherman tells him that his best friend fell off the boat and drowned in the water. Starving for so long, he eats the meal while crying for his friend.

After being rescued, he goes to a diner and orders salmon. When he eats his meal, he jumps and commits suicide. Why did he do it?

Who has married many women but was never married?

Imagine you are in a room with no windows or doors. How will you get out?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?