sadiyah6862 sadiyah6862

25-06-2017
Mathematics

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To use your debit card at a pay-at-the-pump system, you have to enter a four-digit personal identification number (PIN). How many different possible PINs can be formed on the 10-digit keypad? (Repetition is not allowed.)

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Ninayzl Ninayzl

25-06-2017

answer is 5040
10×9×8×7=5040

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