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  2. List of Billboard Hot 100 chart achievements and milestones

    en.wikipedia.org/wiki/List_of_Billboard_Hot_100...

    In 2008, for the 50th anniversary of the Hot 100, Billboard magazine compiled a ranking of the 100 best-performing songs on the chart over the 50 years, along with the best-performing artists. [1] [2] In 2013, Billboard revised the rankings for the chart's 55th anniversary edition. [3] In 2015, Billboard revised the rankings again. [4]

  3. List of artists who have achieved simultaneous number-one ...

    en.wikipedia.org/wiki/List_of_artists_who_have...

    A number of artists have achieved number-one singles and albums simultaneously on the Billboard charts in the United States.The list includes only those charting on the primary top singles/songs and top albums charts, presently the Billboard Hot 100 and the Billboard 200.

  4. Pythagorean triple - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_triple

    A Pythagorean triple consists of three positive integers a, b, and c, such that a2 + b2 = c2. Such a triple is commonly written (a, b, c), a well-known example is (3, 4, 5). If (a, b, c) is a Pythagorean triple, then so is (ka, kb, kc) for any positive integer k. A triangle whose side lengths are a Pythagorean triple is a right triangle and ...

  5. Divisibility rule - Wikipedia

    en.wikipedia.org/wiki/Divisibility_rule

    If the hundreds digit is odd, the number obtained by the last two digits must be 4 times an odd number. 352: 52 = 4 x 13. Add the last digit to twice the rest. The result must be divisible by 8. 56: (5 × 2) + 6 = 16. The last three digits are divisible by 8. [2][3] 34,152: Examine divisibility of just 152: 19 × 8.

  6. Exact trigonometric values - Wikipedia

    en.wikipedia.org/wiki/Exact_trigonometric_values

    30° and 60°. [edit] The values of sine and cosine of 30 and 60 degrees are derived by analysis of the equilateral triangle. In an equilateral triangle, the 3 angles are equal and sum to 180°, therefore each corner angle is 60°. Bisecting one corner, the special right triangle with angles 30-60-90 is obtained.

  7. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    There are also more specific strategies like the continuous enumeration method that reproduces specific patterns. Magic squares are generally classified according to their order n as: odd if n is odd, evenly even (also referred to as "doubly even") if n is a multiple of 4, oddly even (also known as "singly even") if n is any other even number ...

  8. Think IBM Stock Is Expensive? This Chart Might Change ... - AOL

    www.aol.com/finance/think-ibm-stock-expensive...

    This Chart Might Change Your Mind. Dan Victor, The Motley Fool. October 19, 2024 at 4:30 PM. Shares of International Business Machines ... which have an average multiple above 40. One ...

  9. Billboard Hot 100 - Wikipedia

    en.wikipedia.org/wiki/Billboard_Hot_100

    The current Billboard Hot 100 logo. The Billboard Hot 100 is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine. Chart rankings are based on sales (physical and digital), online streaming, and radio airplay in the U.S. [ 1 ]