CAT Quant Practice Problems

Question: If \(pqr = 1,\)the value of the expression \(\frac{1}{{1 + p + q}} + \frac{1}{{1 + q + {r^{ - 1}}}} + \frac{1}{{1 + r + {p^{ - 1}}}}\)is equal to
  1. \(p + q + r\)
  2. \(\frac{1}{{p + q + r}}\)
  3. 1
  4. \({p^{ - 1}} + {q^{ - 1}} + {r^{ - 1}}\)

Correct Option:3

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CAT Quant Practice Problems
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