Math Trivia

1. Fractals are closely related to and often considered part of what field of Mathematics?

From Quiz Fun With Fractals - A Quiz About Roughness

Answer: Geometry

Fractals are infinitely complex patterns that are self-similar across different scales The term "fractal" itself comes from the notion of breaking a line or a figure up into smaller but similar instances of the original. Conceptually, this is done over and over, ad-infinitum resulting in infinite sets. Combinatorics deal primarily with counting and sets. Game theory deals primarily with strategies between rational decision makers (often in zero-sum games). Probability deals with the chances of indeterminate outcomes (e.g. odds & gambling)

From Quiz Mathematical Food for Thought

Answer: 5

All numbers ending in 5 are divisible by, you guessed it, 5. Hence, they are not prime.

From Quiz The Magic of Math

Answer: Denominator

The numerator is the top number of a fraction. A line divides the numerator from the denominator. In a proper fraction, the numerator is smaller than the denominator. An improper fraction has a larger numerator than denominator. The mixed fraction is a whole number beside a fraction.

From Quiz Choose the formula

Answer: (a^2 + b^2)^ 1/2

According to Pythagoras' theorem, the sum of the squares of the legs of the right-angled triangle is equal to the square of the hypotenuse of the triangle. If hypotenuse =c, then a^2 + b^2 = c^2. This will calculate to c = root of (a^2 + b^2).

From Quiz The Fourth Dimension

Answer: Tesseract

The 3-sphere is a sphere in 4 dimensions. It is a 3D shape, just as a sphere (sphere refers to the surface only) in 3 dimensions is a 2D shape. Cubachoron is a made up word.

From Quiz Sorry, Wrong Number

Answer: 2

In the fields of real analysis and discrete mathematics, a prime number is defined as a number that is greater than 1 and has no positive divisors other than 1 and the number itself. So, by this definition, 1 is not a prime number. The divisors of 2 are 1 and 2. So 2 fits the description of a prime number. The next number, 3, also fits the criteria and hence, is also a prime number. The divisors of the next number, 4, are 1, 2, and 4. Using the definition given, 4 is not a prime number. It is a composite number from the fact that 4 = 2 x 2.

From Quiz Easy Math, Made Hard

Answer: 31

Sin(90°) equals 1. Since the hypotenuse of a right triangle IS the side opposite the right angle, they are the same length and their ratio is 1. Going from the ratio to the angle is the reverse of sin, and is called the arcsine. The arcsine of 0.5 equals 30, meaning that the side opposite a 30 degree angle is half the length of the hypotenuse. The field studying the properties of triangles is called trigonometry. Its inception is often credited to the Greek mathematician Hipparchus.

From Quiz All About Math

Answer: 190

First you must multiply 2 by 90, and 3 by 20, then divide 100 by 2, then add the result then subtract it. Q: 2*90+3*20-100/2 = 180+60-50 = 240-50 = 190

From Quiz Elementary Math

Answer: Those inside parentheses

Parentheses take precedence, always - they are only necessary in an equation for that purpose. Ignore them to your peril. So the answer would be: (13 + 7) x (5 - 3) / 4 x (1 + 1) = 20 x 2 / 4 X 2 = 40/8 = 5

From Quiz Palindromic Numbers Party!

Answer: 1001

The smallest four-digit number is 1000. Starting with 1000, it is not difficult to find out that the next number, 1001 is the smallest four-digit palindromic number. "One Thousand and One Nights" is a collection of short stories. It is also known as "Arabian Nights".

From Quiz I Am Special!

Answer: 18

Since the number is a two-digit number and it is a multiple of 9, it could be 18, 27, 45... So let's consider 18 first. Since 1 + 8 = 9 x 2 = 18, 18 is the answer we are looking for.

From Quiz Find that Number!

Answer: 1

Let the number be "x". This gives: x + 1/x = 2x => 1/x = 2x - x => 1/x = x => x^2 = 1 => x = [plus or minus] 1 Since x is a natural number, it has to be positive; therefore x = 1. === (In case you didn't know, the carat (^) sign is used before exponential powers, e.g., "seven cubed" is written as "7^3".)

From Quiz Simple Mixed Math

Answer: 15ft.

The easiest way to find the answer is to use a proportion. The inches always stay on the top and the feet stay on the bottom. 3in. over 5ft. = 9in. over xft. After setting up the proportion you take the cross products. 5*9 = 3x. (3x = 45). Then you divide each side by 3 to get 15ft. Don't forget the units!

From Quiz High School Math

Answer: 5

2(5) + 4 = 14. 10 + 4 = 14.

From Quiz High School Level Maths [ 1 ]

Answer: denominator

Numerator is on the top and Denominator is on the bottom.

From Quiz Mathematical Food for Thought

Answer: 54 square inches

The volume of a cube is equal to its side cubed. Hence, for a cube to have a volume of 27, its side must be 3 inches, as 3 inches x 3 inches x 3 inches is 27 cubic inches. A cube has six faces (if you doubt this, take out your Rubik's cube and count) and each face of the cube is a square with area of 3 inches x 3 inches, which is 9 square inches. If each of the six faces of the cube has an area of 9 square inches, the total surface area of the cube is 54 square inches.

From Quiz The Magic of Math

Answer: Anything inside a parenthesis is worked first

If the order of operations is not used in an equation, the answer will be different from the answer given when the order of operation is used. Anything in parenthesis should be taken care of first no matter what math is needed inside the parenthesis. After the problem inside the parenthesis is worked, deal with any exponents in the equation. Multiplication and division are third in the order of operation with addition and subtraction being the last thing done in an equation.

From Quiz Complex Math For Kids!

Answer: Complex

The expression 5 + 3i is a complex number. Its real component is 5, while its imaginary component is 3i. Note that this expression cannot be simplified further. Do NOT try to add 5 + 3 and "simplify" this as 8i.

From Quiz Five Plus Two is What?

Answer: Minuend

In 5−2 = 3, the 5 is called a minuend, the 2 is a subtrahend and the 3 is the difference. With subtraction of two numbers, the order does matter but changing the order just changes the sign (positive/negative) - their absolute values (distance from 0) are the same. For example, 52−25 = 27, but 25−52 = -27. These numbers (27 and -27) have the same "absolute value", which just means that ignoring the sign, they are both 27.

From Quiz Why Math is Interesting

Answer: The Golden Ratio

The golden ratio, or Phi, is 1.618... It goes on forever and has no pattern, a lot like pi. It was thought to be a perfect ratio and was considered to be the ideal proportions of people's features as well as architecture. It has been demonstrated in plants, flight patterns of birds, and spirals of galaxies and many other places. It seems to be a constant that fits well with natural occurrences as well as aesthetics.

From Quiz The Fourth Dimension

Answer: 16

It is easy to see that a line segment has 2, a square has 4, and a cube has 8. In this case the progression works so it follows that a tesseract has 16.

From Quiz All About Math

Answer: -74

Multiply 25 by itself 2 times. Then subtract. Q: 25^2-199-500 = 625-699 = -74

From Quiz Elementary Math

Answer: Commutative Property

This is the commutative property. Something that commutes (like a commutator or commuter) goes back and forth, changing direction returning to its original state/position. The math example demonstrates that same property, since writing the equation in either direction (as "3 + 2" and "2 + 3") results in the same answer, 5. Note that addition and multiplication are both commutative, while subtraction and division are not. Try a few examples and show it to yourself.

From Quiz Mathematical Terms in Popular Culture

Answer: The Reflex

A reflex angle is one that lies in the range of 180 - 360 degrees, ie greater than a straight line. "The Reflex" was a number hit in Britain for Duran Duran in 1984. A right angle contains 90 degrees. "Have I the Right" was a number one single for The Honeycombs way back in 1964. An acute angle is less than 90 degrees. I'm afraid "My Girl's Acute Girl" is a fictitious title. An obtuse angle lies between 90 - 180 degrees. I don't know of any song called "The Obtuse" but can think of some musicians for whom the phrase might be appropriate.

From Quiz Palindromic Numbers Party!

Answer: 101

Since the sum of three digits is 2 and it is a three-digit number, the number could be 200, 101 and 110. Out of these three numbers, only 101 is a palindromic number.

From Quiz Mathematicians and Discoveries!

Answer: 2

Irrational numbers are those that cannot be expressed in fractions. The square root of 2, or surd 2 is the first known irrational number. Pythagoras, who was known for his Pythagoraean theorem discovered this number's irrationality geometrically. Nowadays, surd 2's irrationality can be proved by using the contradiction method. First, we assume that surd 2 is indeed rational (can be expressed in fraction). Then, by doing some algebraic manipulations, we end up in an statement that contradicts to our first assumption. So, we conclude that surd 2 is irrational. The same method can be used to prove both surd 3 and surd 5 are irrational, too.

From Quiz Find that Number!

Answer: 2

Let the unknown number be "x". log(500x) = 3 Notice that 3 can be written as "log(1000)", because 10^3 = 1000. Substituting "3" with "log(1000)", log(500x) = log(1000) Cancelling log from both sides, 500x = 1000 => x = 2 And so the value of the integer is 2.

From Quiz Simple Mixed Math

Answer: 1/6

Chris ate 3/18 of the pizza but to get it in simplest form you have to divide the numerator and denominator by a common factor which in this case is 3. Therefore, Chris ate 1/6 of the pie.

From Quiz High School Level Maths [ 2 ]

Answer: cubic curve

A cubic curve is formed when the highest order of the equation is 3 (eg: x cubed).

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Last Updated Nov 16 2024 5:44 AM

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