Is Number 7 a lucky number?

Online Answer
Today is a day of sevens: 07/07/07. Seven is considered lucky by many people. There are seven days of the week, seven continents and seven brides for seven brothers.
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These plagues are described in chapters 7 through 11 of the book of Exodus. The plagues were water turned into blood, frogs, lice, gnats, diseased livestock, boils, hail, locusts, darkness for three days and killing of firstborn sons.
I've come to believe that, if what you want is a set white and a soft yolk, simple is best: the seven-minute egg. ... All you have to do is fill a saucepan with water (enough to cover a few large eggs), bring it to a boil, ease in the eggs (I lower them on a spoon), and set a timer for exactly seven minutes.