Cryptic McKinsey Ad

This McKinsey recruitment ad for college grads posted around campuses combines the hand-made feel of the Sex and the City promo with the cryptic geek elitism of Google and Electronic Arts.

The copy in the lower part reads:
x=24, y=30
Phone:=01.(y²-x).(y²-10²)x10
The phone number solves into 01.876.8000.

-- Frederik Samuel and his commentors