题目内容
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x, n and k are all integers, 0 < x < $$10^{7}$$, x=$$n^{k}$$
If the units digit of x is 5, and x could be transformed into both the square of an integer and the cube of an integer, then x must be?
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A$$2^{6}$$
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B$$3^{6}$$
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C$$5^{6}$$
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D$$5^{3}$$
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E$$5^{12}$$
C显示答案