Question

Rework problem 8 from section 1.4 of your text, involving a product code. Assume that X={D,A,C,F}X={D,A,C,F} and Y={6,4,7}Y={6,4,7}. A code consists of 3 different symbols selected from XX followed by 2 not necessarily different symbols from YY.

How many different codes are possible?

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