Can you make four (4) nines (9) equal 100?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

In a kingdom, King George did not allow any citizen to visit the world outside. Also, only a person with proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check the every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter. How?

Forwards I am heavy, backward I am not. What am I?

If 1+9+8=1, what is 2+8+9?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

Spot what is wrong here in below Picture?