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  2. Lottery mathematics - Wikipedia

    en.wikipedia.org/wiki/Lottery_mathematics

    One must divide the number of combinations producing the given result by the total number of possible combinations (for example, () =,,).The numerator equates to the number of ways to select the winning numbers multiplied by the number of ways to select the losing numbers.

  3. Lottery wheeling - Wikipedia

    en.wikipedia.org/wiki/Lottery_wheeling

    The following is an example of an abbreviated wheeling system for a pick-6 lottery with 10 numbers, 4 if 4 guarantee, and the minimum possible number of combinations for that guarantee (20). A template for an abbreviated wheeling system is given as 20 combinations on the numbers from 1 to 10.

  4. de Bruijn sequence - Wikipedia

    en.wikipedia.org/wiki/De_Bruijn_sequence

    For example, a digital door lock with a 4-digit code (each digit having 10 possibilities, from 0 to 9) would have B (10, 4) solutions, with length 10 000. Therefore, only at most 10 000 + 3 = 10 003 (as the solutions are cyclic) presses are needed to open the lock, whereas trying all codes separately would require 4 × 10 000 = 40 000 presses.

  5. Pennsylvania Lottery - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Lottery

    Pick 5's first drawing was on August 26, 2008, under the name Quinto. It is a five-digit game, drawn twice a day (at 1:10 p.m. ET, with the numbers posted on the Lottery's website after 1:35 p.m. ET, and on the live televised drawing at 6:59 p.m. ET), seven days a week. The minimum play in Pick 5 is $1.

  6. NBA draft lottery - Wikipedia

    en.wikipedia.org/wiki/NBA_draft_lottery

    Just as in most traditional lotteries, the order in which the numbers are drawn is immaterial; e.g., a drawing of 1–2–3–4 in that order is the same as 41–3–2. There are a total of 1,001 possible combinations of four balls numbered 1 through 14, with one combination (balls 11–12–13–14, regardless of order) being deemed invalid ...

  7. Four fours - Wikipedia

    en.wikipedia.org/wiki/Four_fours

    For example, "0.4" is usually written as ".4". This is because "0" is a digit, and in this puzzle only the digit "4" can be used. There are also many other ways to find the answer for all of these. A given number will generally have a few possible solutions; any solution that meets the rules is acceptable.

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    mail.aol.com

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  9. Combinatorial number system - Wikipedia

    en.wikipedia.org/wiki/Combinatorial_number_system

    The number associated in the combinatorial number system of degree k to a k-combination C is the number of k-combinations strictly less than C in the given ordering. This number can be computed from C = {c k, ..., c 2, c 1} with c k > ... > c 2 > c 1 as follows.