Question

P(A) + P(Ā)
a) 1
b) c)2 d)-1​

Answer 1

a) 1 is the answer for the above question

Answer 2

Answer:

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. ... This is the picture taken by the Hubble Space Telescope showing thousands of galaxies.