Mathematics - Vector Question with Solution | TestHub

If the middle points of sides $\mathrm{BC},\mathrm{CA}\&\mathrm{AB}$ of triangle $\mathrm{ABC}$ are respectively $\mathrm{D},\mathrm{E},\mathrm{F}$ then position vector of centre of triangle $\mathrm{DEF}$, when position vector of $A,B,C$ are respectively $\hat{i}+\hat{j},\hat{j}+\hat{k},\hat{k}+\hat{i}$ is