Going by Einstein's theories of relativity, black holes warp the fabric of space-time to a severe extent. As matter comes closer and closer to the black hole, the matter is compressed and/or stretched in a process called spaghettification. There is also a worm hole theory which states a black hole will exit in another point in space, different universe, or even a whole new dimension.
the strong force of the black hole means that you cannot live in it
You can't - that's the whole idea of a black hole. Don't get near a black hole in the first place.
We know nothing about the conditions within a black hole, but it seems unlikely that a black hole could exist within a black hole, or even if this concept would have any meaning at all.
Yes a black hole could envelope our solar system but it does not swallow anything.
A black hole? well scientist are not sure. Black holes is a theory, not proving to be true. But there could be.
In theory, yes, a black hole could suck up the sun.
Theoretically, a black hole can destroy anything.
Yes, a black hole could travel through space.
Since whit holes only exist mathematically, a black hole could not pull in a white hole.
Due to the immense gravity of a black hole, no life we can currently fathom could survive in one.
there is no such thing as that
I don't think you could talk about a "day" on a black hole - for a start, nobody could survive in a black hole, to observe such a day. But if you refer to the rotation, one black hole has been observed that seems to spin over a thousand times per second. This rotation, of course, can be different for other black holes.