If `(2p+5q)/(2r+5s) = (4p-3q)/(4r-3s)`, then find the relation between p, q, r and s.

If (p ^(2) + q ^(2)) // (r ^(2) + s ^(2)) = (pq) //(rs), then what is the value of (p-q)/(p+q) in terms of r and s ?

If (P)/(3) = (Q)/(4) = (R)/(5) , then P : Q : R is :

if 10!=2^(p)3^(q)5^(r)7^(s) then

If p : q :r :s = 3 : 4 : 7 : 8 and p+s=55 , then find q + r.

If S(p, q, r) = (~p) vv [-(q ^^ r)] is a compound statement, then S(~p, ~q, ~r) is a) ~S(p, q, r) b) S(p, q, r) c) p vv (q ^^ r) d) p vv (q vv r)

If 10! =2^(p).3^(q).5^(r).7^(s) , then -