It is simply trying to convey a sense of perpetual momentum in never giving up. If you presume one is standing before first falling down then you will always stand one more time than you fall.
七転、八起 - Nanakorobi, yaoki The question is poorly worded since the poster intended this as a word-for-word quiz question and a better way of asking, more accurate to the way it's used, would have been to have asked 'How do you say 'Never give up' in Japanese.'
八月 (hachigatsu) is the Japanese word for August. Hachigatsu uses two characters, the first meaning 'eight' and the second meaning 'month' to create the word for August (lit. 8th month). There are also old names for the Japanese months that are not used anymore. 葉月 (hazuki) is the old name for August, but this isn't used anymore (as stated above). Each old name has a meaning and hazuki's meaning is 'month of leaves'.
hachi
The eight means eight one-thousandths.
hachi
Infinity
Stop
It is Greek for eight, as in the eight tentacles of an octopus.
Toyota uses eight strokes in Japanese writing, which is considered lucky. The company was founded by the Toyoda family, which took ten strokes! So the company name of Toyota was chosen.
For forty eight hours.
Eight vegetables
"Achtundvierzig", literally meaning "Eight and Fourty"