Why are there 12 columns on the penny?

How long does it take windows to clean up your PC? What is the volume in cubic feet of the square pyramid that is 12 height and 7base or width? When was The Computer Paper created? How do you setup outlook account on Macbook Air? Who invented computer scanners? Where can one send their Mac Mini to be refurbished? Is a Symantec NetBackup 5230 a storage or network appliance? What does yes and no mean in Microsoft Access? What is an image of a distance object caused by light refraction through air of varying temperature? What server is another computer that screens all your incoming and outgoing messages? What contents are featured on the Hauppage Computer Works official website? Make a antivirus with Visual Basic 2008? How many 710 ml bottles make up 4 liters? When was laser iridotomy invented? How do you set the tax rate on the sharp el 1801 V calculator? How many databases are available? How will a female rat act to a new male rat? How do you hide toolbar on windows? What does pay pal mean? How do you replace toner cartridge on a Canon PC745 copier?