Find The Geometric Mean of The Observations

The geometric mean of the observations x₁, x₂, x₃,  …….. x_n is G₁. The geometric mean of the observations y₁, y₂, y₃, ……, y_n is G₂. The geometric mean of observations
x₁, x₂, x₃, …… x­_n, is
y₁  y₂  y₃         y_n

1. G₁, G₂
2. In (G₁G₂)
3. G_1/ G₂
4. In (G­₁)/ (G_{2 )}