leah880 leah880

28-07-2021
Mathematics

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A four digit password is a number that begins with a 3. If digits can be repeated how many possible passwords are there? show and explain your work

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25nguyenaustin 25nguyenaustin

28-07-2021

Answer:

The answer is 1,000

SInce the beginning number is 3 and there are ten possible numbers to put in the remaining three slots, there are exactly 1,000 possible combinations for a 3-digit code. The answer is 1,000. There are 3 rows of 10 digits. The number of combinations 10 to the thid power which is 1000 (10 * 10 * 10)

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