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1/20
How many digits are there in a Social Security number?
How many digits are there in a Social Security number?
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Social Security's primary original purpose was to provide financial benefits to people over age 65. Upon retirement, people who were no longer working would receive monthly retirement benefits or Social Security income. The chosen solution was to use a 9-digit number divided into three parts: area number, group number, and serial number. The first three digits, the area number, represented the state in which the SSN was issued. (See boxed insert, "Sample SSN Area Numbers and Locations.") Generally, the lowest area numbers were given to people on the East Coast, with increasingly higher numbers given going westward.
2/20
What number is represented in Roman numerals by the letter X?
What number is represented in Roman numerals by the letter X?
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Roman numerals are a collection of symbols that make up the number system that was used by the ancient Romans. The Roman numeral system uses only seven symbols: I, V, X, L, C, D, and M. I represents the number 1, V represents 5, X is 10, L is 50, C is 100, D is 500, and M is 1,000. Today, Roman numerals are more commonly used in titles, to number parts of works, in music theory, and on clock faces. Roman numerals are also often used in royal titles. This is customary when there has been more than one ruler with the same name in the history of a given country.
Source: Dictionary
3/20
Which of these geometric shapes has four sides?
Which of these geometric shapes has four sides?
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Quadrilateral just means "four sides" (quad means four, lateral means side). A quadrilateral has four sides, is 2-dimensional (a flat shape), closed (the lines join up), and has straight sides. A rectangle is a quadrilateral where every angle is a right angle (90°). Also, opposite sides are parallel and of equal length.
Source: Maths Fun
4/20
What shape gives the president's office in the White House its name?
What shape gives the president's office in the White House its name?
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The Oval Office has been the main office for the president since President William Howard Taft began working in it in October 1909. After his inauguration, President Taft held a competition to select an architect to enlarge and make permanent the West Wing's "temporary" Executive office built during Theodore Roosevelt's administration. Taft ordered a southward extension of the existing structure. The winning architect was Nathan C. Wyeth of Washington, D.C., who designed the expansion and a new office for the President. Wyeth modeled the new president's office after the White House's most famous oval-shaped room—the Blue Room.
Source: White House History
5/20
What does a straight line across the center of a circle measure?
What does a straight line across the center of a circle measure?
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In a circle, the diameter is a line that passes through the center and meets the circumference at opposite ends. It is twice as long as the radius of the circle. In other words, the diameter of a circle is the line that passes through the center and divides the circle into two equal parts. It is denoted by the letter D. There are infinite points on the circumference of a circle, that's why a circle has an infinite number of diameters, and each diameter is of equal length.
Source: Cue Math
6/20
What is the shape of a dartboard?
What is the shape of a dartboard?
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Darts or dart-throwing is a competitive sport in which two or more players bare-handedly throw small sharp-pointed missiles known as darts at a round target known as a dartboard. Points can be scored by hitting specifically marked areas of the board, though unlike in sports such as archery, these areas are distributed all across the board and do not follow a principle of points increasing towards the center of the board.
Source: Wikipedia
7/20
What is the term for two lines on a plane that never touch?
What is the term for two lines on a plane that never touch?
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Two or more lines that lie in the same plane and never intersect each other are known as parallel lines. They are equidistant from each other and have the same slope. Any two lines are said to be parallel if the corresponding angles so formed are equal if the alternate interior angles so formed are equal, if the alternate exterior angles so formed are equal, and if the consecutive interior angles on the same side of the transversal are supplementary.
Source: Cuemath
8/20
What shape is the Renault logo?
What shape is the Renault logo?
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Given the French obsession with perfection, it is understandable that Renault required decades to perfect its logo. Time and time again, the rhombus or diamond that defines Renault has been transformed and updated according to the requirements of modern life, and today, the company’s logo is one of the most recognizable symbols of French excellence.
Source: Hot Cars
9/20
On which flat shape would you find a hypotenuse?
On which flat shape would you find a hypotenuse?
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A hypotenuse is the longest side of a right triangle. It's the side that is opposite to the right angle (90°). Hypotenuse length may be found, for example, from the Pythagorean theorem. Yes, the hypotenuse is always the longest side, but only for right-angled triangles. For isosceles triangles, the two equal sides are known as the legs, while in an equilateral triangle all sides are known simply as sides.
Source: Omni Calculator
10/20
What does the letter C represent in Roman numerals?
What does the letter C represent in Roman numerals?
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Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet. The modern style uses seven symbols, each with a fixed integer value. The letter C represents the number 100.
Source: Wikipedia
11/20
The internal angles of a rectangle add up to how many degrees?
The internal angles of a rectangle add up to how many degrees?
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A rectangle is a two-dimensional figure with four sides, four vertices, and four angles. Since a rectangle is a quadrilateral in which all four angles are equal to each other, the adjacent sides of a rectangle are met at the right angle. Thus, the angle formed by its adjacent sides is 90°. The four sides of a rectangle are not equal but the four internal angles are equal and their sum is 360°.
Source: Cuemath
12/20
What shape is the flag of the Vatican?
What shape is the flag of the Vatican?
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The flag of Vatican City is a vertically divided yellow-white national flag with an emblem on the white stripe featuring two crossed keys and a papal tiara. The flag is square in its proportions. Both the coat of arms and flag of Vatican City bear crossed gold and silver keys bound with a red cord and surmounted by the tiara. The yellow and white stripes of the flag date from the early 19th century. Earlier papal flags were red and gold, associated with the coats of arms of the pope and of the city of Rome. The current flag was first officially hoisted on June 8, 1929. Today it flies over nunciatures and other buildings outside Vatican City that have extraterritorial rights.
Source: Britannica
13/20
In mathematics, what is the symbol "<" often used to denote?
In mathematics, what is the symbol "<" often used to denote?
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The less-than sign is a mathematical symbol that denotes an inequality between two values. The widely adopted form of two equal-length strokes connecting in an acute angle at the left, <, has been found in documents dating as far back as the 1560s. In mathematical writing, the less-than sign is typically placed between two values being compared and signifies that the first number is less than the second number. Examples of typical usage include 1⁄2 < 1 and −2 < 0. Since the development of computer programming languages, the less-than sign and the greater-than sign have been repurposed for a range of uses and operations.
Source: Wikipedia
14/20
What number does the Roman numeral D stand for?
What number does the Roman numeral D stand for?
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A Roman numeral is any of the symbols used in a system of numerical notation based on the ancient Roman system. The symbols are I, V, X, L, C, D, and M, standing respectively for 1, 5, 10, 50, 100, 500, and 1,000 in the Hindu-Arabic numeral system. A symbol placed after another of equal or greater value adds its value. Usually, only three identical symbols can be used consecutively; to express numbers beginning with a 4 or a 9, a symbol is placed before one of greater value to subtract its value.
Source: Britannica
15/20
What number is the highest on a typical roulette wheel?
What number is the highest on a typical roulette wheel?
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The pockets of the roulette wheel are numbered from 0 to 36. Number ranges from 1 to 10 and 19 to 28, odd numbers are red, and even are black. In ranges from 11 to 18 and 29 to 36, odd numbers are black, and even are red. There is a green pocket numbered 0 (zero). In American roulette, there is a second green pocket marked 00. Pocket number order on the roulette wheel adheres to the following clockwise sequence in most casinos.
Source: Wikipedia
16/20
What type of angle is less than 90 degrees?
What type of angle is less than 90 degrees?
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In geometry and mathematics, acute angles are angles whose measurements fall between 0 and 90 degrees or have a radian of fewer than 90 degrees. When the term is given to a triangle as in an acute triangle, it means that all angles in the triangle are less than 90 degrees. It is important to note that the angle must be less than 90 degrees to be defined as an acute angle.
Source: Thought Co.
17/20
What is used after trillions?
What is used after trillions?
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Trillion is a 1 with 12 zeros after it, and it looks like this: 1,000,000,000,000. The next named number after trillion is quadrillion, which is a 1 with 15 zeros after it: 1,000,000,000,000,000. There are, of course, many numbers between trillion and quadrillion, but it isn't until quadrillion that that number value actually gets a new name. Numbers between the two would always include the word "trillion": two trillion, a hundred trillion, etc.
Source: PrepScholar
18/20
What do the internal angles of a triangle add up to?
What do the internal angles of a triangle add up to?
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In a Euclidean space, the sum of angles of a triangle equals the straight angle (180 degrees, π radians, two right angles, or a half-turn). A triangle has three angles, one at each vertex, bounded by a pair of adjacent sides. It was unknown for a long time whether other geometries exist, for which this sum is different. The influence of this problem on mathematics was particularly strong during the 19th century.
Source: Wikipedia
19/20
How do you represent the number 2 in binary?
How do you represent the number 2 in binary?
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The binary number system plays an important role in how information is stored on computers because computers only understand numbers —specifically, base 2 numbers. The binary number system is a base 2 system that uses only the numerals 0 and 1 to represent "off" and "on" in a computer's electrical system. To understand binary numbers, which use a base 2 system, first look at the more familiar system of base 10 numbers. In a base 10 system, each column needs to reach 10 before moving to the next column. In binary, there can be only a 0 or a 1 before moving on to the next column. As a result, the number 2 is written as 10 in binary. Take a look at the number three. Obviously, in base 10 it is written as 3. In base two, it is written as 11, indicating a 1 in the 2s column and a 1 in the 1s column. This becomes 2+1 = 3.
Source: ThoughtCo
20/20
William Shanks famously spent his life calculating what number?
William Shanks famously spent his life calculating what number?
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William Shanks (25 January 1812 – June 1882) was an English amateur mathematician. He is famous for his calculation of π (pi) to 707 places in 1873, which was correct up to the first 527 places. The error was discovered in 1944 by D. F. Ferguson (using a mechanical desk calculator). Nevertheless, Shanks's approximation was the longest expansion of π until the advent of the digital electronic computer in the 1940s.
Source: Wikipedia
