Find the hidden tiger in the given optical illusion ?

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

I have teeth but i don't bite. Who Am I ?

Rihana, Peeta, and Logan order a pizza for $10. Out of the three, Rihana and Peeta were quite hungry and ate 6 slices a piece, while Logan had just 2 slices.

Now, they want to split the cost among them fairly but due to the lack of change, they decide to round off the cost to the nearest possible dollar.

Can you find out the fairway which should be used to split the money?

What if the pizza was worth $11?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Identify the hidden meaning behind this picture?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

10+10 and 11+11 can give you the same answer.

Explain how?