[Solved] The distance between two stars of masses 3 M_S and 6 M_S is 9𝑅. Here 𝑅 is the mean distance between the centers of the Earth and the Sun, and M_S is the mass of the Sun. The two stars orbit around their common center of mass in circular orbits with period 𝑛𝑇, where 𝑇 is the period of Earth’s revolution around the Sun. The value of n is ___. - - JEE (Advanced) 2021 Paper-2