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If loga\((\frac{1}{8}) = -\frac{3}{4}\), than what is x?(a) 287(b) 469(c) 512(d) 623The question was asked in an interview for internship.This intriguing question comes from Discrete Probability in chapter Discrete Probability of Discrete Mathematics

Answer»

Right option is (c) 512

Explanation: By using exponential FORM: a^-5/9 = 2/8. Now, raise both SIDES of the above equation to the POWER -9/5: (x^-5/9)^-9/5 = (1/32)^-9/5. By SIMPLIFYING we get, a = 32^9/5 = 2^9 = 512.



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