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.
Credit cards have a series of 14-16 digits, beginning with the numbers 3, 4, 5 or 6. American Express cards begin with 3 and have 15 digits. Diners Club and Carte Blanche â¦(JCB) cards begin with 3 and have 14 or 16 digits. Visa cards begin with 4 and have 16 digits.