Mathematics, 23.08.2019 22:10 jay1462

Correct answers only !
credit cards have 16 digit numbers, of which the first 15 digits identify the credit card and the sixteenth digit is the check digit (the last digit is fixed). u-kan-trust-us credit card numbers begin with 61, 62, or 63. what is the maximum number of credit cards that uktu can issue?
a. 3 ( 10^12)
b. 3 (10^13)
c. 3 (10^14)
d. 3 (10^15)

Correct answers only ! credit cards have 16 digit numbers, of which the first 15 d

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credit cards have 16 digit numbers, of which the first 15 digits identi...