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

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

What's the best place to go shopping in the ocean?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What is so fragile that saying its name breaks it?

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?

What is the largest number you can write with just 3 digits?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?