Arrows

Arrows is an amazing puzzle devised by Philipp Hübner. It is Gold5471's second favourite puzzle. The rules are interesting: Place a number inside every arrow so that the arrow's number tells you how many distinct numbers lie in the direction of which the arrow points. The puzzle gets you thinking in all directions. Come in 5x5, 6x6 and 7x7. The sample is a 5x5. Enjoy!