" Q."8[" If "p,q,r" are three positive real numbers then "],[" value of "(p+q)(q+r)(r+p)" is "]

If p,q,r be three distinct real numbers, then the value of (p+q)(q+r)(r+p), is

If p,q,r be three distinct real numbers, then the value of (p+q)(q+r)(r+p), is

If p and r are positive real numbers,then the quantity (p+r)/(q+r) is

If p, q, r are real numbers then:

If log_p(q)+log_q(r)+log_r(p) vanishes where p,q,r are positive reals different than unity then the value of (log_p(q))^3+(log_q(r))^3+(log_r(p))^3

If, p,q,r are negative distinct real numbers , then the determinant Delta=|(p,q,r),(q,r,p),(r,p,q)| is :