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20 POINTS!!! Word problem: Marlon challenged her best friend, Lauren, to make a list of all the four digit numbers she could think of that have the digits nine, seven, five, and one. How many numbers should
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20 POINTS!!! Word problem: Marlon challenged her best friend, Lauren, to make a list of all the four digit numbers she could think of that have the digits nine, seven, five, and one. How many numbers should Lauren find? Please show work:

Thanks!!

User Vliu
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The first digit could be 9 7 5 or 1
The 2nd digit could be 9 7 5 or 1
The third digit could be 9 7 5 or 1
The fourth digit could be 9 7 5 or 1
4 possibilities * 4 * 4 *4= 256 possibilities
User JoeGeeky
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