The following ad was posted for Computer Engineers. Can you figure out the phone number?

Solution to the Problem: The required telephone number is 01.876-8000. The actual phone number belongs to McKinsey & Company, a top management consultancy firm that posted the advertiesement. Here is their address: McKinsey & Company Switzerland Alpenstrasse 3 8065 Zurich phone: +41 44 876 8000 01.876.8000 is the phone-number for local calls Using the periods to be separators and the last "x" to mean times, you get 01.((30*30)-24).((30*30)-(10*10))*10 01.(900-24).(900-100)*10 01.(876).800*10 01.876-8000 Several other ideas were sent in but they didn't result in real phone numbers: Using the periods to be the separators between the 1 and the area code and the phone number, you would get 01.(900-24).(900-100)2410, or 1.876.8002410. Using the periods to mean multiplication, It is given that x=24 and y=30, and so: 01.(y2 – x). (y2 – 102)x10 = 01.(30^2 - 24).(30^2 - 10^2)2410 = (1)*(876)*(8002410) = 7010111160

Correctly solved by: