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Properties of The Number 137 - Mathematics Stack Exchange The number 137 is a prime number One of the permutation of 137 is 173, which is a prime number The summation of 137 digits is 11 which is again a prime number! My question: Is there a name for this type of numbers? There are some other Properties for 137 in Wikipedia I found another Properties such that 137 =27 +23 + 1 or the only way to write the number 137 as a summation of two square
Upper and lower bounds - Mathematics Stack Exchange The point half way between is 1 2(135 + 140) = 137 5 1 2 (135 + 140) = 137 5 Any number less than 137 5 137 5 (and greater than 132 5 132 5) should be rounded to 135 135 This is general The interval between cutoff points is the size of your increment of rounding, half above a target and half below
How exactly does Knuths Up-Arrow notation work? Close! The idea behind the up-arrow notation is the so called Hyperoperation Sequence, which goes like: Successor: add 1 S(a) = a + 1 Addition: repeated successor b + a = S(S(…S(a))) ⏟ b copies Multiplication: repeated addition b ∗ a = a + (a + (⋯ + a)) ⏟ b copies Exponentiation: repeated multiplication ab = a ∗ (a ∗ (⋯ ∗ a)) ⏟ b copies This is denoted as a ↑ b, sort
In what situations should I use and not use a pooled estimator for In a question, it says that a true-false exam is used to discriminate between well-prepared students and poorly prepared students There are 205250 205 250 well-prepared students and 137250 137 250 poorly prepared students who answered a certain item in the exam correctly
faster $x$ is than $y$ - Mathematics Stack Exchange Therefore, 960 7 960 7 is the the ratio of the manual time and the automated time, and hence the automated time is 960 7 960 7 times faster, or approximately 137 137 times faster To express this into a percent, note that 100 100 % faster means double the speed, 200 200 % faster means triple the speed, and so on So, 137 137 times faster will be 13800 13800 % faster
Different ways for calculating distance between two geodetic points . . . 1 You say two "geodetic points" which might imply that you are interested in calculating the shortest distance on the surface of the WGS84 ellipsoid This link solves this geodesic problem giving an answer of 137 689 m The link also gives a reference to a paper describing how this calculation is done