How many different license plates can be made if only digits can be used, and no digit can be used more than o

please please help, i dont understand, explain as well








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How many different license plates can be made if only digits can be used, and no digit can be used more than o
Assuming 6 numbers in the license plate, you have 10 digits to choose from for the first number (the digits 0 through 9), then 9 digits to choose from for the second number (because you can%26#039;t re-use the first number), then you have 8 digits to choose from for the third number, etc...





Therefore, once you multiply how many choices you have together to account for the entire license plate of 6 numbers, you get 10 * 9 * 8 * 7 * 6 * 5 = 151200 different plates.