Decode below three cipher riddles:

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

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

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

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

The more you take me, the more you leave me behind.
Who Am I?