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

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Can you replace the question mark with the correct number?