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If a, b, x, and y are positive integers, and 13a×13b=(13x)y=1313, what is the average (arithmetic mean) of a, b, x, and y?
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If a, b, x, and y are positive integers, and fff\({13}^{a}\times {13}^{b}={({13}^{x})}^{y}={13}^{13}\)/fff, what is the average (arithmetic mean) of a, b, x, and y?
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