Rank from highest to lowest in order of decresing mass

1 Gg, 100 g, 1 kg, 50 cg, 1 cg, 1 dg, 50 million ng,

The best idea to solve this question is to convert all in same unit i. e. grams. 1 Gg = 10^9 g 100 g = 10^2 g 50 cg = 50*10^-2 g = 0.5 g 1 kg = 1000 g 1 cg = 0.01 g 1 dg = 0.1 g 50 mn ng = 50 * 10^6 * 10^-9 gram = 5 * 10 ^-2 g = 0.5g So, the correct order is 1 Gg > 1 kg > 100 g > 50 cg = 50 mn ng > 1 dg > 1 cg