If pqr ≠ 0 and p^(-x) = 1/q , q^(-y) = 1/r, r^(-z) = 1/p , what is the value of the product xyz ?

GATE 2018 Previous Year Paper Solution Question 7 – General Aptitude

In this video question on General Aptitude has been discussed which were asked in the examination of GATE 2018.

Question :- If pqr ≠ 0 and p^(-x) = 1/q , q^(-y) = 1/r, r^(-z) = 1/p , what is the value of the product xyz ?

A. -1
B. 1/pqr
C. 1
D. pqr

Solution is given in the video.