Question

If
n (A) = 75, n(B) = 45, n (AUB) = 90 then find
n[(A -B) U (B - A)].​

Answer 1

Step-by-step explanation:

Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!