Gate2018 cs Q10

0. In pqr ≠ 0 and

  • Option : C
  • Explanation :
    px = q
    qy = r
    xlogp = logq
    ylogq = logr
    zlogr = logp
    x = logq/yp
    y = yz/logq
    z = logp /yr
    x x y x z = 1
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