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PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF. PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2.
[11] [12] [13] In 1997, Brazilian singer and rapper Gabriel o Pensador released the single "2345meia78" from his album Quebra-Cabeça. The song tells the story of a man who decides to call all the women in his phonebook from a public phone. The song was in 11th place among the best Brazilian songs of 1997. [14]
USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
The video shows an ink-smudged piece of paper, the words “ERROR 321” being typed out slowly. There seems to be a faded “13” in the paper, which scrolls down once “ERROR 321” is typed out.
From the resemblance of the number 2 to a duck; see also "22". Response is a single "quack." 3 Cup of tea Rhymes with "three". 4 Knock at the door From the Nursery rhyme One, Two, Buckle my shoe; Three, Four, Knock at the door. 5 Man alive [3] Rhymes with "five". 6 Half a dozen [5] A common phrase meaning six units (see "12" below). Tom Mix
Numerology is a practice that ascribes meaning to specific digits and series of digits. The last day of the year — Dec. 31, 2023 — is particularly intriguing, numerologically speaking.
22 can read as "two twos", which is the only fixed point of John Conway's look-and-say function. [4] The number 22 appears prominently within sporadic groups. The Mathieu group M 22 is one of 26 sporadic finite simple groups, defined as the 3-transitive permutation representation on 22 points. [5] There are also 22 regular complex apeirohedra. [6]
The first section of the M-CHAT identifies 20 behavioral characteristics of the autism spectrum and asks if the child has experienced any of them. If the parent reports a sufficient number of characteristics for the child in this section, a follow-up form outlining specific questions pertaining to that characteristic would be administered by the researcher.