81 x 9 = 801. What must you do to make the this equation true?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

What is the coolest letter in the alphabet?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

Solve the following series:
AZ, GT, MN, __, YB

Can you count the number of triangles in the given figure?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What can you see in the middle of March and April that you can never see in any other month?

Solve the equation in the image by looking at the pattern closely.