- How many 3 number combinations are there?
- What 2 Numbers add up to 72?
- What are multiples of 72?
- What is the fastest way to multiply large numbers?
- What 3 numbers add up to 20?
- How do we multiply numbers?
- How do you multiply more than 2 numbers?
- What 3 numbers add up to 15?
- What are three numbers that equal 72?
- What two numbers add to 18?
- Why is 9 a special number?
- Is 9 the most powerful number?
- What 3 numbers add up to 9?
- What number is equal to 15?
- What can equal to 72?
- What is the 9 trick in math?
- What 3 numbers multiplied equal 12?

## How many 3 number combinations are there?

3.

=10⋅9⋅8.

This is the number of ways of choosing a 3-digit combination in which the three digits are all distinct: there are 10 ways to choose the first digit, but then only 9 choices remain for the second digit, and once those have been chosen only 8 choices remain for the last digit..

## What 2 Numbers add up to 72?

Factor of 72 in pairs and 72 are a factor pair of 72 since 1 x 72= 72. and 36 are a factor pair of 72 since 2 x 36= 72. and 24 are a factor pair of 72 since 3 x 24= 72. and 18 are a factor pair of 72 since 4 x 18= 72.

## What are multiples of 72?

Basically, multiples of 72 give extended time table of 72, such as, 72, 144, 216, 288, 360, 432, 504, 576, 648 and so on. To find the factors of a number, 72, we will use the factorization method.

## What is the fastest way to multiply large numbers?

Add the digits of the first factors that you multiplied. For example, if you multiplied 506 times 437, add 5, 0 and 6 to get 11. If the number has more than one digit, add the digits until you arrive at a single digit. In this case, you would add 1 and 1 to get 2.

## What 3 numbers add up to 20?

Answer: 1, 9, and 10 are the three numbers.

## How do we multiply numbers?

Steps to multiply using Long MultiplicationWrite the two numbers one below the other as per the places of their digits. … Multiply ones digit of the top number by the ones digit of the bottom number. … Multiply the tens digit of the top number by the ones digit of the bottom number. … Write a 0 below the ones digit as shown.More items…

## How do you multiply more than 2 numbers?

The answer that we get when we multiply two numbers together is called the product. The numbers that we multiply together are called factors. When we multiply three or more numbers together, we start by multiplying any two factors first. Next, we multiply this product by another factor.

## What 3 numbers add up to 15?

Therefore the average sum of three numbers is 45:3=15. The number 15 is called the magic number of the 3×3 square. You can also achieve 15, if you add the middle number 5 three times. The odd numbers 1,3,7, and 9 occur twice in the reductions, the even numbers 2,4,6,8 three times and the number 5 once.

## What are three numbers that equal 72?

So the 3 the number is 24,24 and 24 that will make 72.

## What two numbers add to 18?

Factors of 18: The square root of 18 is 4.2426, rounded down to the closest whole number is 4. Testing the integer values 1 through 4 for division into 18 with a 0 remainder we get these factor pairs: (1 and 18), (2 and 9), (3 and 6). The factors of 18 are 1, 2, 3, 6, 9, 18.

## Why is 9 a special number?

Nine is a sacred number. Nine is the number of completion and fulfillment. Nine is a symbol of wisdom and good leadership. Nine is the number of heaven.

## Is 9 the most powerful number?

Number 9 is the strongest number among all numbers. … When number 9 is multiplied with other numbers, the result will always reduce to 9. For example, 9 × 2 = 18, and 1+8 = 9. Even 9×10 = 90 reduces to 9 since 9+0 = 9.

## What 3 numbers add up to 9?

2 + 7 = 9, cross out 2 and 7. 2.4 + 3 = 9, cross out 4, 3 and 2. 3. There are no other groups of numbers adding up to 9.

## What number is equal to 15?

15 = 1 x 15 or 3 x 5. Factors of 15: 1, 3, 5, 15. Prime factorization: 15 = 3 x 5. When 15 is a clue in the FIND THE FACTORS 1 – 10 or 1 – 12 puzzles, use 3 and 5 as the factors.

## What can equal to 72?

36 x 2 = 72, 24 x 3 = 72, 18 x 4 = 72, 12 x 6 = 72, 9 x 8 = 72. Since 2 and 3 are primary numbers, they have no further factors. 1 is of course a factor. So, we can multiply 1, 2 and 3 to get 72.

## What is the 9 trick in math?

A Mathemagical Trick 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 3 numbers multiplied equal 12?

The Game of Factor: For example, you can use your special playing card deck to play a game like “Factor.” You need to know that a factor is a number that divides evenly into a product, so that 1, 2, 3, 4, 6, and 12 are all factors of 12.