Now, equating the powers in equation 1, 2, and 3, we get
(2)78=>(64)13
(3)65=>(243)13
(7)39=>(343)13
Therefore, the correct order will be
(64)13<(243)13<(343)13
5(2)390<(9)65<3(7)117
Hence, (C) is the correct answer.
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