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  2. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.The number π appears in many formulae across mathematics and physics.

  3. Bingo Blitz - Wikipedia

    en.wikipedia.org/wiki/Bingo_Blitz

    The bingo cards at Bingo Blitz are made up of 24 random numbers across five rows and columns. When the game begins you need to keep an eye out for your numbers to appear so you can cross them off your card. To call bingo depends on what the winning pattern is for that particular round. [14]

  4. National identity card (Sri Lanka) - Wikipedia

    en.wikipedia.org/wiki/National_identity_card...

    The first two digits of the number are the holder's year of birth (e.g.: 91 for someone born in 1991). The next three digits contain the number of the day in the year for the person's birth. For women, 500 is added to the number of days. The next three digits are serial number of the issued day. The next digit is the check digit.

  5. National identity number (Norway) - Wikipedia

    en.wikipedia.org/wiki/National_identity_number...

    A D-number is issued to people who have to interact with Norwegian authorities, but are not regarded as resident in the country. D-numbers are built up with the same structures as ordinary ID numbers, with two notable differences. The first is that 4 is added to the first digit.

  6. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    As in the basic Roman system, the Etruscans wrote the symbols that added to the desired number, from higher to lower value. Thus, the number 87, for example, would be written 50 + 10 + 10 + 10 + 5 + 1 + 1 = 𐌣𐌢𐌢𐌢𐌡𐌠𐌠 (this would appear as 𐌠𐌠𐌡𐌢𐌢𐌢𐌣 since Etruscan was written from right to left.) [59]

  7. Tombola (game) - Wikipedia

    en.wikipedia.org/wiki/Tombola_(game)

    The carnival game consists of having all the numbers on a previously distributed card or ballot that the clerk, or fairgoer, calls out as a bingo. Then, if it turns out that they have all the numbers on their ticket, the player is rewarded with a prize, which usually ranges, depending on the number of accumulations of points, from stuffed ...

  8. South African identity card - Wikipedia

    en.wikipedia.org/wiki/South_African_identity_card

    A 5-digit security number, appearing with the text 'RSA' in the multiple-layer image on the back of the card [9] A 9-digit card number appearing on the back of the card [ 9 ] The sequence 1234567890 repeated to fill up the available space in the PDF417 barcode.

  9. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    The VISA method takes the rightmost eleven digits of the PAN excluding the checksum value, a PIN validation key index (PVKI, chosen from one to six, a PVKI of 0 indicates that the PIN cannot be verified through PVS [29]) and the required PIN value to make a 64-bit number, the PVKI selects a validation key (PVK, of 128 bits) to encrypt this ...