find the number of possible choices for a 4-digit (pin) if the digits cannot be repeated

find the possible choices of a 4-digit (pin) if the digits cannot be repeated

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10-03-2018
Mathematics

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find the number of possible choices for a 4-digit (pin) if the digits cannot be repeated

find the possible choices of a 4-digit (pin) if the digits cannot be repeated

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MsEHolt MsEHolt · Answer 1 · 2018-03-20T00:30:34+01:00

MsEHolt MsEHolt

20-03-2018

There are 5040 choices.

There are 10 digits to choose from for the first digit. Since the digits cannot repeat, there are 9 to choose from for the second; 8 choices for the third; and 7 choices for the fourth.

10(9)(8)(7) = 5040.

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find the number of possible choices for a 4-digit (pin) if the digits cannot be repeated find the possible choices of a 4-digit (pin) if the digits cannot be repeated

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find the number of possible choices for a 4-digit (pin) if the digits cannot be repeated

find the possible choices of a 4-digit (pin) if the digits cannot be repeated