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  2. Combination - Wikipedia

    en.wikipedia.org/wiki/Combination

    These combinations (subsets) are enumerated by the 1 digits of the set of base 2 numbers counting from 0 to 2 n − 1, where each digit position is an item from the set of n. Given 3 cards numbered 1 to 3, there are 8 distinct combinations , including the empty set:

  3. Lottery mathematics - Wikipedia

    en.wikipedia.org/wiki/Lottery_mathematics

    A combination of numbers is usually presented in ascending order. An eventual 7th drawn number, the reserve or bonus, is presented at the end. An alternative method of calculating the odds is to note that the probability of the first ball corresponding to one of the six chosen is 6/49; the probability of the second ball corresponding to one of ...

  4. 4-bit computing - Wikipedia

    en.wikipedia.org/wiki/4-bit_computing

    4-bit computing is the use of computer architectures in which integers and other data units are 4 bits wide. 4-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers or data buses of that size. A group of four bits is also called a nibble and has 2 4 = 16 possible values, with a ...

  5. Lottery wheeling - Wikipedia

    en.wikipedia.org/wiki/Lottery_wheeling

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

  6. Computer number format - Wikipedia

    en.wikipedia.org/wiki/Computer_number_format

    A single bit allows only two value-combinations, two bits combined can make four separate values, three bits for eight, and so on, increasing with the formula 2 n. The amount of possible combinations doubles with each binary digit added as illustrated in Table 2.

  7. Wikipedia:List of all single-letter-single-digit combinations

    en.wikipedia.org/wiki/Wikipedia:List_of_all...

    The list of all single-letter-single-digit combinations contains 520 elements of the form [[{{letter}}{{digit}}]] and [[{{letter}}-{{digit}}]]. In general, any abbreviation expansion page is located at the shorter link. Once the abbreviation page has been created, the hyphen link should {{R from abbreviation}} to the other page.

  8. 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.

  9. Four fours - Wikipedia

    en.wikipedia.org/wiki/Four_fours

    Note that numbers with values less than one are not usually written with a leading zero. 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.