Because 7x2 is 14-1 is 13!
7 is considered by most to be a lucky number.
7 13 3
For many generations, black cats were considered unlucky. In some cultures, the numbers 7 or 13 are also unlucky.
Many cultures over the years have tried to associate certain numbers as lucky or unlucky, with no evidence at all. e.g. 13 people at the Last supper, so 13 is (apparently) unlucky. I do not believe in luck, I believe in probability. Your birthdate is neither lucky or unlucky.
There are several lucky numbers that people have. many consider the number 7 to be lucky.
In some cultures, the number 17 is considered unlucky because when written in Roman numerals, XVII, an anagram of VIXI, a Latin word meaning "I have lived," often associated with death. However, in some cultures, 17 is considered lucky as it is a combination of 1 and 7, both of which are considered lucky numbers in numerology. Ultimately, whether 17 is lucky or unlucky depends on individual beliefs and cultural interpretations.
The classic lucky number is 7. The classic unlucky number is 13. 14 is a luck number too, it comes up EVERYWHERE!
Lucky: 1, 2, 6, 8, 168 Unlucky: 4, 7
No. Four is unlucky in Japan. This is because the word for 4 is shi, and the word for death is shini. Many building do not have a floor 4. 7 (shichi) is also unlucky for the same reason.
Lucky 7 - 2003 TV is rated/received certificates of: Argentina:13 Netherlands:AL USA:PG-13
13 is really only considered unlucky because a mass group of people deemed it as such several thousand years ago during the height of the Greek empire. Most of our current society is based on Greek culture and the Greeks had 12 as their lucky number. So many people had 12 as their lucky number, hence anything over 12 was considered bad luck. Indeed, many cultures identified 12 as lucky, the same way we deem 7 as lucky. Why would you want 13 of anything when 12 is such a perfect number? This is shown in many mythologies, such as that Hercules completed 12 labors. The first clocks were based on the idea that there was 12 hours of day and 12 hours of night. And in Norse mythology, 12 Gods were invited into Valhalla, the Hall of the Gods, but Loki snuck in and killed Baldur using Mistletoe, Loki being the uninvited 13th Guest. There have historically been some instances of bad luck associated with the number 13, such as Apollo 13 or the Last Supper having 13 guests and indeed some people do believe as such that 13 is unlucky. But often, I seriously think that 13 gets a bad rap. People are more prone to blame something if the number 13 was somehow involved. Like if someone breaks their leg on the 13th floor of a building, they'll say "This is proof that 13 is bad luck" but if they break their leg on the 21st floor, they'll say "OWW! This was my terrible luck".
Seven is just as lucky as any other number. One could argue that it is as lucky or as unlucky as you want it to be. Statistically, 7 has a 1 in 37 (or 1 in 38 using the 00 Wheel) chance of being spun - exactly the same odds as every other number. However, if you have chips covering 7 and it is spun, then it is a lucky number for you.