What are Oblong numbers?

Updated: 4/28/2022
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An oblong number (also called a "pronic number") represents an oblong shape created when dots are placed equidistant from each other in rows and columns. The number of dots across must be one number greater than the number of dots down, so if I make a grid of dots which is 3 dots across and two dots down, it represents the number 6, the total number of dots. Six, then, is the oblong number. If the oblong has 4 dots across and 3 dots down, it equals 12 dots, so the oblong number is 12.

. . . .

. . . . = 12 This visual representation of a number is called an "array."

. . . .

These arrays are used commonly now in schools to help students understand the concept of multiplication. In this case, (3X4=12).

The algebraic formula for such a number is: n(n+1). This is an integer (number) times the same number plus one. So 3 X (3=1), or four, equals 12.

The first few oblong numbers are 2, 6, 12, 20, and 30. This series of numbers is the successive sums of the series of even numbers or the products of two consecutive numbers: 2 = 1·2; 6 = 2·3 = 2 + 4; 12 = 3·4; and so on.

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Q: What are Oblong numbers?
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Can a number be both a square number and an oblong number?

This user has never heard of such a thing as an oblong number. If you mean a number that equals the product of two different numbers other than 1, then yes: 36 = 6 x 6 = 4 x 9. Or if you prefer, 100 = 10 x 10 = 5 x 20. ----- this user over here says no, if you define an oblong number to be a positive number in the form n(n+1). to say a number can be an oblong number and a square number is to say that there exists an n such that n2=n(n+1) =n2 + n so unless n=0, this statement is not true, and since the oblong number is positive, then it can't be zero. why can't it be zero (or negative, for that matter)? well, these numbers originally popped up as a geometric picture; an oblong number number is a group of dots arranged in even rows or columns, where there was one more column than row, or vice versa. the number itself is the quantity of dots, which is always positive. another way of thinking about it is by definition, an oblong number is a square minus a row or column, or a square plus a row or column, and thus, not a square.

What are the different types of numbers?

irrational numbers odd numbers even numbers whole numbers prime numbers composite numbers counting numbers

Are there any prine numbers that are square numbers?

There are no prime numbers that are square numbers

Are rational numbers whole numbers?

The set of rational numbers includes all whole numbers, so SOME rational numbers will also be whole number. But not all rational numbers are whole numbers. So, as a rule, no, rational numbers are not whole numbers.

What are the set of the real number?

the set of real numbers are the numbers which make the entire number system. they include all the different number systems like integers,rational numbers,irrational numbers,whole numbers & natural numbers.

Related questions

What is the Nth Term Formula for Oblong Numbers?

The Nth term formula for oblong numbers is N = N(N+1)

Is 8 an oblong number?

No. Oblong numbers are rectangular numbers with the length one longer than the width, ie they are of the form n(n+1) = n2 + n. The first few oblong numbers are 2, 6, 12, ... 8 is not one of these.

How did an oblong number get its name?

It is a composite number which is a multiple of two different factors, each greater than 1. The name derives from the fact that a rectangle (or oblong) whose sides are those two numbers will have an area equal to the oblong number. If there were no requirement that the two numbers are greater than 1 then every number would be an oblong number.

What are the cheats for oblong on hooda math they are numbers? Codes are here!

Is oblong a noun?

Yes the word oblong can be a noun. It is something with an oblong shape.

Oblong as a sentence?

Can you give me a sentence for oblong? oblong about 12 inches by 8 inches

Where is the Oblong Public Branch Library in Oblong located?

The address of the Oblong Public Branch Library is: 110 East Main Street, Oblong, 62449 1411

What is the Filipino term of the shape oblong?

The Filipino term for the shape oblong is "habilog."

Can you put oblong in a sentence?

The table was oblong in shape, not square.

Another name for an oblong?

"Rectangle" is virtually synonymous with "oblong."

When was Angus Oblong born?

Angus Oblong was born in 1976.

What is the Difference between oblong and rectangle?

An oblong is a rectangle. However, an oblong is not a square. Both are rectangles because they both have 4 right angles, but a square is equal-sided and an oblong isn't.