A little something to wake up your brain.

What is the value of the second row?


[             [                      [                     ö          = 11

ö       Y                    ö              Ù        =?

Ù    Y                   Ù               Ù        = 11

ö      ö             ö                [                 = 9

= 8           = 21              = 8                   = 7



This is a mathematical challenge, and it's been said that:   
* If you're an engineer, you should be able to solve it in (under) three minutes,
* if you're an architect, in three hours;
* if you're a doctor, in six hours;
* if you're an accountant, in three months and
* If you're a lawyer, probably never.