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There has been lots of conflicting information on this topic. Many of the lottery howto web sites will say that the majority of winners are hand-picked numbers. However if you check out the related link, their statistics are quoted at "70%". My information is from that source: The percentage of quick-picks varies a great deal from game to game and also with the size of the jackpot. In Powerball, the quick-pick percentage normally runs about 70 percent, and about 70 percent of the winners are quick-pick players. The bottom line is that how you pick your numbers has absolutely nothing to do with being a winner. The numbers 1-2-3-4-5*6 have exactly the same chance of winning as any other set of six numbers. The only thing is, if you pick your own numbers, and you base them on something logical, artificial or limiting (like dates), you are more likely to have to split the pari-mutual jackpot prize because others may be using the same numbers. The most commonly played number combination is 7-14-21-28-35*42. If you won with that number, you would share the jackpot with many, many other players.
The term that describes numbers that are easy to compute mentally is "round numbers." Round numbers are whole numbers that end in zero or five, making them simpler to work with in mental calculations. These numbers are often used in estimation and quick arithmetic tasks due to their ease of manipulation.
Here are the quick examples of the numbers written in scientific notation: 3.4 = 3.4 x 100 34.0 = 3.4 x 10
Do a quick search on the Web to get a list of prime numbers; all numbers greater than 1 that are not prime are composite. (That is, 0 and 1 should not be listed as "prime numbers", nor as "composite numbers".) Composite numbers are numbers that have at least three factors. A composite number can be divided evenly by 1, itself, and another number. From zero to fifty, they are 2,4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30,32,33,34,35,36,38,39,40,42,45,46,48, and 49.
Since you put this question in the Excel category, I will answer relative to what you can do with Excel. The quick way is to highlight the column of numbers and click on the Auto-Sum button.