Heating oil prices can fluctuate widely over time and by location. 1  From January 2005 to March 2010, the average price nationwide was $1.95-$2.95 a gallon; from January to March 2012 the average weekly price was $3.85-$4.12. 2  A building/mechanical permit is usually required to replace a furnace.
Quick Answer. A MasterCard has a total of 16 digits. MasterCard, as well as most major credit card systems, use the ANSI Standard X4.13-1983 system, in which each digit identifies a particular attribute of the card. . Keep Learning.
The Verification Code is a three-digit number on the back of your MasterCard. The full credit card number is reprinted in the signature box and at the end of the number is the Verification Code. Discover. The Verification Code is a three-digit number on the back of your Discover card. The full credit card number is reprinted in the signature box and at the end of the number is the Verification Code. American Express.