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

Replace the question mark with the correct number below.

What does this rebus means ?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

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

Using Only Five 5's and any mathematical operator make sum as 37

Can you count the number of squares in the figure below?

Solve the rebus riddle in the picture below.

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?