response: Arabs write it with horizontal upper line.
original_response: Arabs write it with horizontal upper line
history: I really like the number 7. Can you tell me anything about it? It's a natural number preceding 8 and following 6. I think it is a lucky number. Wonder why 7 is associated with luck. Not sure. The Hindus in the beginning wrote 7 in one stroke as a curve. I see. I have seen 7 written with a line through it as well. How interesting.
knowledge: Both modern Arab forms influenced the European form, a two-stroke character consisting of a horizontal upper line joined at its right to a line going down to the bottom left corner, a line that is slightly curved in some font variants.