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When, in algebra, two letters are written next to each other as a term, such as m and n becoming mn, it means they are multiplied. So mn is a shorter way of writing "m times n" or "m x n"

Therefore, when m = 1 and n = 1, mn = 1 x 1 = 1

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Q: What is mn equals 1 if m equals 1 and n equals 1?
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