Can you solve below logical number series puzzle?

Not possible number from which i have to fiil up the boxes are odd and sum of three odd number can not be even.

Solve this logical number series puzzle by replace question mark with the correct number 9090 = 4 1234 = 0 6055 = 2 9081 = 4 8888 = ?

Can you identify the logic behind the equation below and solve the puzzle by completing the equation?

12 + 13 + 7 = 1 15 + 16 + 11= 2 17 + 18 + 16 = ?

Can you solve the below algebraic picture puzzle?

Solve below cryptarithms puzzle by replacing letter by the appropriate number.