# What Two Numbers Add Up To 9?

## Why do all multiples of 9 add up to 9?

Since our base-ten system has a digital root system of 9 we get multiples of 9 that always fall on the digital root 9.

This is because both the digital root counts up by (10 – 1)n with each multiple of 9 and 9 counts up (10-1)n with each multiple in the digital root..

## How many 9s are there in 108?

9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108. After listing the multiples of nine up to 108, we added the digits of each multiple and discovered that each answer was equal to 9 (with 99; 9 + 9 = 18; then 1 + 8 = 9).

## What is the sum of 8 and the difference of 2?

Let x,une two numbers. x=5,y=3. 5and 3 is the number whose sum is 8 and the difference is 2.

## What is the GCF of 5 and 10?

Greatest common factor (GCF) of 5 and 10 is 5.

## What does 9 mean in the Bible?

completeness of GodNumber 9 is a symbol of completeness of God and also a symbol of finality. It means that God completed his creation and all his promises. … According to the Bible, number 9 is also a symbol of fruits of the Holy Spirit of God.

## Is 9 a lucky number?

No. 9 in Chinese Culture. Besides 6 and 8, Chinese people like 9 very much as 9 has the same pronunciation with 久 (Jiu, meaning everlasting). … Since Nine, the highest single-digit number in base ten, stands for completeness and eternity, many emperors in the ancient China love the number a lot.

## What is the 9 trick in math?

Here’s how it goes: Start by thinking of a number, any number. Now, multiply that number by 9. If the result is a multi-digit number, add its digits together to come up with a new number. If that new number is still a multi-digit number, add its digits together to come up with yet another new number.

## What is the sum of 18 and the difference of 2?

To answer the first part of your question “what is the sum of two numbers that are 18?” 18 + 18 = 36. To answer the next part “and their difference is 2”.

## What are the factors of 11?

Table of Factors and MultiplesFactorsMultiples1, 2, 5, 1010201, 1111221, 2, 3, 4, 6, 1212241, 13132641 more rows

## What is the sum of 2 numbers?

The result of adding two or more numbers. (because 2 + 4 + 3 = 9).

## Is 9 a magic number?

Nine is a Motzkin number. … In base 10, a positive number is divisible by 9 if and only if its digital root is 9. That is, if any natural number is multiplied by 9, and the digits of the answer are repeatedly added until it is just one digit, the sum will be nine: 2 × 9 = 18 (1 + 8 = 9)

## What is a factor of 10?

The factors of 10 are 1, 2, 5, and 10. You can also look at this the other way around: if you can multiply two whole numbers to create a third number, those two numbers are factors of the third. 2 x 5 = 10, so 2 and 5 are factors of 10. 1 x 10 = 10, so 1 and 10 are also factors of 10.

## What is the factor of 81?

If 1 × 81 = 81, then (1, 81) is a pair factor of 81. Therefore, the positive pair factors are (1, 81), (3, 27), and (9, 9). -9 × -9 = 81, (-9, -9) is a pair factor of 81.

## Is 9 the most powerful number?

Number 9 is the strongest number among all numbers. … For example, 9 × 2 = 18, and 1+8 = 9. Even 9×10 = 90 reduces to 9 since 9+0 = 9.