In a $\triangle A B C$, the sides $a, b, c$ are in A.P. if and only if $r_1, r_2, r_3$ are in

In a $\triangle A B C$, the sides $a, b, c$ are in A.P. if and only if $r_1, r_2, r_3$ are in
  1. A.P.
  2. G.P.
  3. H.P.
  4. A.G.P

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2020 (07 Oct Special)

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