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  2. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.

  3. Tetration - Wikipedia

    en.wikipedia.org/wiki/Tetration

    In mathematics, tetration (or hyper-4) is an operation based on iterated, or repeated, exponentiation. There is no standard notation for tetration, though Knuth's up arrow notation ↑ ↑ {\displaystyle \uparrow \uparrow } and the left-exponent x b {\displaystyle {}^{x}b} are common.

  4. American Invitational Mathematics Examination - Wikipedia

    en.wikipedia.org/wiki/American_Invitational...

    The competition consists of 15 questions of increasing difficulty, where each answer is an integer between 0 and 999 inclusive. Thus the competition effectively removes the element of chance afforded by a multiple-choice test while preserving the ease of automated grading; answers are entered onto an OMR sheet, similar to the way grid-in math questions are answered on the SAT.

  5. Today’s NYT ‘Strands’ Hints, Spangram and Answers ... - AOL

    www.aol.com/today-nyt-strands-hints-spangram...

    - NYT ‘Connections’ Hints and Answers Today, Tuesday, February 4. Related: 15 Fun Games Like Connections to Play Every Day. Show comments. Advertisement. Advertisement. In Other News. Finance.

  6. A cybersecurity executive was pardoned by Donald Trump. His ...

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    The pardon itself is not much clearer. It says Wade is granted "a full and unconditional pardon" for his conviction "in sealed Docket No. 06-cr-394" and notes that "the offenses of conviction and ...

  7. NYT Connections Sports Edition Today: Hints and Answers for ...

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    What Are the Answers to Connections Sports Edition Today? SCORING PLAYS : EXTRA POINT, FIELD GOAL, SAFETY, TOUCHDOWN BIG GAME SNACKS : CHIPS, NACHOS, PIZZA, WINGS

  8. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    The products of small numbers may be calculated by using the squares of integers; for example, to calculate 13 × 17, one can remark 15 is the mean of the two factors, and think of it as (15 − 2) × (15 + 2), i.e. 15 2 − 2 2. Knowing that 15 2 is 225 and 2 2 is 4, simple subtraction shows that 225 − 4 = 221, which is the desired product.

  9. What is Elon Musk's role as a "special government employee"?

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    Billionaire Elon Musk is categorized as a "special government employee" through his work with the Department of Government Efficiency, or DOGE, a cost-cutting initiative created by President Trump ...