`H_1, H_2` are 2 H.M.'s between a,b then `(H_1+H_2)/(H_1.H_2)`

If A_1,A_2 be two A.M.\'s G_1,G_2 be the two G.M.\'s and H_1,H_2 be the two H.M.\'s between a and b then (A) (A_1+A_2)/(G_1 G_2)=(a+b)/(ab) (B) (H_1+H_2)/(H_1 H_2)=(a+b)/(ab) (C) (G_1G_2)/(H_1 H_2)=(A_1+A_2)/(H_1+H_2) (D) (A_1+A_2)(H_1+H_2)/(H_1 H_2)=(a+b)/(a-b)

If A_1,A_2 be two A.M.\'s G_1,G_2 be the two G.M.\'s and H_1,H_2 be the two H.M.\'s between a and b then (A) (A_1+A_2)/(G_1 G_2)=(a+b)/ab (B) (H_1+H_2)/(H_1 H_2)=(a+b)/ab (C) (G_1G_2)/(H_1 H_2)=(A_1+A_2)/(H_1+H_2) (D) (A_1+A_2)/(H_1 H_2)=(a+b)/(a-b)

If A_1,A_2 be two A.M.\'s G_1,G_2 be the two G.M.\'s and H_1,H_2 be the two H.M.\'s between a and b then (A) (A_1+A_2)/(G_1 G_2)=(a+b)/(ab) (B) (H_1+H_2)/(H_1 H_2)=(a+b)/ab (C) (G_1G_2)/(H_1 H_2)=(A_1+A_2)/(H_1+H_2) (D) (A_1+A_2)/(H_1 H_2)=(a+b)/(a-b)

If A_1,A_2,G_1,G_2 and H_1,H_2 are AM’s, GM’s and HM’s between two numbers, then (A_1+A_2)/(H_1+H_2). (H_1H_2)/(G_1G_2) equals _____

If A_1,A_2,G_1,G_2 and H_1,H_2 are AM’s, GM’s and HM’s between two numbers, then (A_1+A_2)/(H_1+H_2). (H_1H_2)/(G_1G_2) equals _____

If H_1.,H_2,…,H_20 are 20 harmonic means between 2 and 3, then (H_1+2)/(H_1-2)+(H_20+3)/(H_20-3)=

If H_1.,H_2,…,H_20 are 20 harmonic means between 2 and 3, then (H_1+2)/(H_1-2)+(H_20+3)/(H_20-3)=

If H_1.,H_2,…,H_20 are 20 harmonic means between 2 and 3, then (H_1+2)/(H_1-2)+(H_20+3)/(H_20-3)=

If H_1.,H_2,…,H_20 are 20 harmonic means between 2 and 3, then (H_1+2)/(H_1-2)+(H_20+3)/(H_20-3)=

If H_1, H_2, ,H_(20) are 20 harmonic means between 2 and 3, then (H_1+2)/(H_1-2)+(H_(20)+3)/(H_(20)-3)= a. 20 b.21 c. 40 d. 38