Why is the longest human nose just 11 inches?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What four weights can be used to balance from 1 to 30 pounds?

When we see 2 but call 10?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Which point will the car reach to go out?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

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

How do you go from 98 to 720 using just one letter?