If `a, b, c` and `d` are different positive real numbers in H.P, then (A)` ab > cd` (B)` ac> bd` (D) none of these(C) `ad> bc `

If a,b,c and d are different positive real numbers in H.P,then (A)ab>cd(B)ac>bd (D) none of these (C)ad>bc

If a,b,c,d are four different positive numbers which are in A.P then prove that bc gt ad

If a,b,c are three distinct positive real numbers in G.P., than prove that c^2+2ab gt 3ac .

If a,b,c are three distinct positive real numbers in G.P., than prove that c^2+2ab gt 3ac .

If a ,b ,c ,d are four distinct positive numbers in G.P. then show that a+d > b+c dot

Let a,b,c be three distinct positive real numbers in G.P , then prove that a^(2)+2bc - 3ac gt 0

If a, b, c, d are positive numbers in HP then prove that ad gt bc .

If a, b, c and d are positive real numbers such that a+b+c+d= 1 then prove that ab + bc + cd + da le 1/4 .

If a,b,c,d are positive numbers such that a,b,c are in A.P. and b,c,d are in H.P., then : (A) ab=cd (B) ac=bd (C) ad=bc (D)none of these

If a, b, c, d are in H.P then ab + bc + cd =