Question

How many black holes are their in milky way and their distance from earth or ( rest of the planets) the closest one and the farest one and is their any possibility black hole can consume earth ???

Answer 1

(1.1-2.3)*10^8 black holes are in milky way and the distance are 2.5million light years away.

It is possible. But it is much more likely to be destroyed by a rogue star, simply because they are much more common. And even that is a minute possibility.

Black holes are the relics of burnt out large starts. As such, they follow the procession of stars orbiting the centre of the galaxy just as they did when they were still stars. Things in the galaxy that were likely to collide did so many billions of years ago. The idea that a black hole would suddenly leap out of its orbit and come for us is ridiculous.