Student cards used for purchases count as part of the money supply as they serve as a widely accepted means of payment.
M1 includes currency in circulation, demand deposits, and traveler's checks. M2 encompasses M1 plus savings deposits, time deposits, and money market funds.
Regarding the student cards, these cards would be considered as part of the money supply since they hold funds that can be used as a medium of exchange, fitting the definition of money as a means of payment.
Therefore, the student cards would be categorized as part of the money supply since they represent a widely accepted means of payment.
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