exists and is an alternate of . 1 microgram is 0.000001 gram or 1 gram is 1000000 micrograms. Scroll down to related links and look at Weight and mass conversion.
Report Abuse. The major Credit cards (Visa Mastercard) almost always have 16 digits. The number will be less than 16 if the card is from a department store or gas station. CupCake Â· 8 years ago.
These are the three-digit numbers on the back of MasterCard, Visa and Discover cards, or the four-digit numbers on the front of an American Express card. These codes were introduced in the late 1990s in response to the need to validate the growing number of Internet transactions.