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Answers
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Difficulty—
Manhattan Prep
If x and y are positive integers and n = 5^x + 7^(y+3), what is the units digit of n?
1) y = 2x - 16
2) y is divisible by 4
OA B
If x and y are positive integers and n = 5^x + 7^(y+3), what is the units digit of n?
1) y = 2x - 16
2) y is divisible by 4
OA B
