If `p^(q')=512` find the minimum possible value of `(p) (q) (r)`, where `p, q, r` are positive integers.

The positive integers p,q and r, then possible value of r is 3(b)5(c)7(d)1

Prove that p x^(q-r)+q x^(r-p)+r x^(p-q)> p+q+r ,where p, q, r are distinct and x!=1.

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

Given that q^2-p r ,0,\ p >0, then the value of |p q p x+q y q r q x+r y p x+q y q x+r y0| is- a. zero b. positive c. negative \ d. q^2+p r