Explanation

In the Sun–Earth system, L2 lies about 1.5 million km beyond Earth away from the Sun (roughly 151 million km from the Sun), while L3 lies on the far side of the Sun at approximately Earth's orbital distance (about 149.6 million km from the Sun, on the opposite side). The distance between L2 and L3 is therefore roughly the sum — about 300 million km, i.e., about 30 crore km. Among the options, 32 crore km (option D) is the closest; 30 lakh km is the approximate distance between L1 and L2, not between L2 and L3.