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What are trick math questions?

The following is a simple example of a trick math question used by a CEO during job interviews: "A hammer and a nail cost $1.10, and the hammer costs $1 more than the nail. How much does the nail cost?" The question is tricky because it is phrased in such a way that, if an applicant is not listening closely enough, the phrase "more than the nail" may easily go unheard. This would lead him to say that the answer is a dime. The correct answer is a nickel.

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How is trigonometry used in aviation?

Although the extent to which trigonometry is used by pilots and other navigators has dwindled over the years, many of their methods and computer systems are heavily ground in trigonometry and advanced mathematics. GPS, which can be found aboard nearly every modern air vehicle, uses the principles of trigonometry to compute distances and routes between locations.\nTrigonometry allows pilots and flight engineers to account for their speed, velocity, angle of ascent or descent, as well as other external factors such as wind speed and direction. To do this, they utilize triangles and other structu..

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What is a linear pair?

The two angles from the intersecting lines add up to equal 180 degrees, creating a straight angle. Each intersecting line has an adjacent angle, which means that the lines have the same starting point, one shared side and no shared data points. In a linear pair, the shared side is also 180 degrees. There are 20 conjectures in geometry to formulate angles.

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What is the difference between a t-test and a chi-squared test?

A student can use a one-sample t-test or a two-sample t-test. A one-sample t-test is designed to answer a null hypothesis that concerns the data set's mean when the data are from independent observation and follow a normal distribution.The two-sample t-test evaluates the null hypothesis when two sets of data are collected. Both sets of data must come from the same sample size for the results to be valid.For a chi-squared test, the two sets of data must first be divided into categories. Once the data are divided, the chi-squared test is used to evaluate the two sets of data to see if there..

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What is relative standard deviation?

Standard deviation, s, is a statistical measure of the precision for values of repetitive measurements. The advantage of using the standard deviation to quote uncertainty is due to the fact that it has the same units as the experimental data. The RSD is computed from the standard deviation, s, and is often expressed as parts per thousand (ppt) or a percentage:\nRSD = {s/x) * 1000 ppt –RSD = {S/X} * 100%\nWhere,\nRSD = Relative standard deviation\nS = Standard deviation\nx = mean\nThe %-RSD is known as the “coefficient of variance” or CV\nThe RSD shows the spread of data in percentage. Th..

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How many faces does a cylinder have?

Each individual surface of a three-dimensional object is considered a face. Faces are separated by edges. A cube has six faces, and a pyramid has four. While the individual surfaces on cubes and pyramids are easy to count because they are flat, faces are not always flat surfaces. They can also be curved, like the third face on a cylinder. Similarly, a cone has two faces and one edge, and a ball has only one face and no edges.

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What is the difference between direct and inverse proportion?

In a direct proportion, as the variable X increases as does the variable Y, and K is the constant of proportionality that relates these two values. An example of this type of relationship is a person gets paid $10 an hour for a job. If the person works five hours, then he gets paid $50. In this direct proportion, k = $10, x = 5 and y = $50. The equation is y = $10x. From this equation, one can see that the more hours worked by a person, the higher the amount of pay. If one writes the equation as k = y/x, then one sees that the ratio y/x remains the same.\nIn an inverse proportion, the two vari..

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What are the factors of 91?

The smallest factor of 91 is 1. The number 1 is a factor of every number, as it divides every number without leaving a remainder. Correspondingly, every number is also a factor of itself. Therefore, the largest factor of 91 is 91 itself.\nThe largest factor of any number is also the smallest multiple of that number. In this case, 91 is both the largest factor and the first multiple of 91. The number 2 is never a factor of any odd number, as 2 does not divide an odd number exactly.\nIf the factors of a number are prime numbers, they are called prime factors of that number. In the case of 91, th..

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How do you calculate occupancy rate?

Which formula is used depends on the information required. If the occupancy rate of a single unit is required, then the ratio of the time the unit is rented to the time it was available is appropriate. To find the general occupancy rate of a set of units during a specific time period, use the number of units occupied over the total number of units available.

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How many inches are there in 4 millimeters?

It is easy to convert linear English units to metric linear units, or to convert metric units to English units. To convert millimeters to inches, divide the length in millimeters by 25.4. For example, by dividing 50.8 millimeters by 25.4, the result is 2 inches. Conversely, multiply the number of inches by 25.4 to convert the figure to millimeters. For example, something that is 100 inches long is approximately equal to 2,540 millimeters.

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