Q: The value of 1/(1 + p + q^-1) + 1/(1 + q + r^-1) + 1/(1 + r + p^-1), given that pqr = 1, is :
a)1
b)0
c)pqr
d)p+q+r
e)-1
a)1
b)0
c)pqr
d)p+q+r
e)-1
800. Arjun's-Bird-Eye
Ans is (a) 1.
similar to https://www.beatthegmat.com/algebra-1-t58826.html
do the same steps.
brings any two denominator into one denominator by taking common and using the condition.
