Why does 777 became lucky number for jackpot

Question

what's the idea behind number 777 for slots jackpot.

Answer 1

    BECAUSE THIS NUMBER #777

IS OUR INTERNET  TELEPHONE

CONNECTION NUMBER  FOR THE

DIALING TONE.

     IT CONNECTS MY SYSTEM.

WITHOUT I CANNOT CONNECT

WITH YOU.

THUS,THIS NUMBER BECOMES

LUCKY   FOR BOOSTING JACKPOT.

Answer 2

I believe that the number 7 has the magic to hit the triple 7 in the slots because of the significance of the 7 in Craps (the dice game). Seven is the magic number in that game (roll a 7 with the dice (two) and you win without another roll required).

Answer 3

number 7 looks like a gun shape to me so it bangs.

Answer 4

Seven has been considered a 'lucky' number for thousands of years.

So when they were designing slot machines one of the things they decided to use as a winning symbol was seven, because of the 'lucky' superstitions surrounding it.