Multiple choice technology mainframe

What is the significance of first two digits of External card number :

  1. Country code

  2. Check digits

  3. Card speciality

  4. AMEX code
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

External card processing systems use prefix digits to identify card networks. The first two digits of an external American Express card number (typically 34 or 37) constitute the AMEX code. The distractors are incorrect because check digits are at the end, and country or specialty codes use different digit positions.

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