Can you find out the missing number in the grid?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

What has lots of eyes, but can’t see?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

In the four images below, can you find the odd one out?