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If a, b, x, and y are positive integers, and $$13^{a}$$*$$13^{b}$$=($$13^{x})^{y}$$=$$13^{13}$$, what is the average (arithmetic mean) of a, b, x, and y?
Give your answer as a decimal.
Give your answer as a decimal.
6.75 显示答案
以上解析由 考满分老师提供。
