Find the digit a so that a-253228-46-7 is valid isbn number

Reference no: EM131225471

(a) Find the digit A so that A-253228-46-7 is a valid ISBN number.

(b) Find the digit x so that 3-25814-39x75-6 is a valid universal product code.

Reference no: EM131225471

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Find the digit a so that a-253228-46-7 is valid isbn number : Find the digit x so that 3-25814-39x75-6 is a valid universal product code.

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