Question

What is the direction of magnetic field lines inside a magnet?

Answer 1

The Direction of Magnetic field Lines
inside the magnet is from South to North .
And direction of Magnetic field Lines outside the magnet is from Noth to South.

Answer 2

inside a magnet the field lines move from South to North direction. whereas outside the magnet the field lines move from North to South.
I'm showing a diagram below as well.
Hope this helps. :)