" If "a,b,c" are in A.P.,then "bc,ca" and "ab" are "

Q.If a,b,c are in AP,then bc,ca,ab are in ?

1/a, 1/b and 1/c are in A.P. Show that bc, ca, and ab are also in A.P.

If a,b,c are in A.P., then (bc)/(ca+ab),(ca)/(bc+ab),(ab)/(bc+ca)

If a,b,c are in H.P and ab+bc+ca=15 then ca=

If a,b,c are in H.P and ab+bc+ca=15 then ca=

If a,b,c are in A.P then a+1/(bc), b+1/(ca), c+1/(ab) are in

If (a + b) / (1- ab) , b, (b + c) / (1 - bc) are in A.P., then a, 1/b , c are in

If a, b, c are in A.P., then prove that : (i) b+c,c+a,a+b" are also in A.P." (ii) (1)/(bc),(1)/(ca),(1)/(ab)" are also in A.P." (iii) (a(b+c))/(bc),(b(c+a))/(ca),(c(a+b))/(ab)" are also in A.P."

If a, b, c are In A.P., then show that, a^(2)(b+c), b^(2)(c+a), c^(2)(a+b) are in A.P. (ab+bc+ca != 0)