What is GCF of 18 and 85?

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GCF of 18 and 85 is 1

How to find GCF of two numbers

Steps to find GCF of 18 and 85

Find all the numbers that would divide 18 and 85 without leaving any remainder as explained in factors below.
Find the greatest common factor from the list of factors for 18 and 85, and read off the answer!

Example: Find gcf of 18 and 85

Factors for 18: 1, 2, 3, 6, 9, 18
Factors for 85: 1, 5, 17, 85

Hence, GCf of 18 and 85 is 1

What does GCF mean in mathematics?

Greatest Common Fcator (GCF) or also sometimes written as greates common divisor is the largest number that can evenly divide the given two numbers. GCF is represented as GCF (18, 85).

Properties of GCF

Given two numbers 18 and 85, such that GCF is 1 where 1 will always be less than 18 and 85.
GCF of two numbers is always equal to 1 in case given numbers are consecutive.
The product of GCF and LCM of two given numbers is equal to the product of two numbers.
The GCF of two given numbers is either 1 or the number itself if one of them is a prime number.

What is the definition of factors?

In mathematics, factors are number, algebraic expressions which when multiplied together produce desired product. A factor of a number can be positive or negative.

Properties of Factors

Each number is a factor of itself. Eg. 18 and 85 are factors of themselves respectively.
Every number other than 1 has at least two factors, namely the number itself and 1.
Every factor of a number is an exact divisor of that number, example 1, 2, 3, 6, 9, 18 are exact divisors of 18 and 1, 5, 17, 85 are exact divisors of 85.
1 is a factor of every number. Eg. 1 is a factor of 18 and also of 85.
Every number is a factor of zero (0), since 18 x 0 = 0 and 85 x 0 = 0.

Steps to find Factors of 18 and 85

Step 1. Find all the numbers that would divide 18 and 85 without leaving any remainder. Starting with the number 1 upto 9 (half of 18) and 1 upto 42 (half of 85). The number 1 and the number itself are always factors of the given number.

18 ÷ 1 : Remainder = 0

85 ÷ 1 : Remainder = 0

18 ÷ 2 : Remainder = 0

85 ÷ 5 : Remainder = 0

18 ÷ 3 : Remainder = 0

85 ÷ 17 : Remainder = 0

18 ÷ 6 : Remainder = 0

85 ÷ 85 : Remainder = 0

18 ÷ 9 : Remainder = 0

18 ÷ 18 : Remainder = 0

Hence, Factors of 18 are 1, 2, 3, 6, 9, and 18

And, Factors of 85 are 1, 5, 17, and 85

Examples of GCF

Sammy baked 18 chocolate cookies and 85 fruit and nut cookies to package in plastic containers for her friends at college. She wants to divide the cookies into identical boxes so that each box has the same number of each kind of cookies. She wishes that each box should have greatest number of cookies possible, how many plastic boxes does she need?

Since Sammy wants to pack greatest number of cookies possible. So for calculating total number of boxes required we need to calculate the GCF of 18 and 85.
GCF of 18 and 85 is 1.

What is the difference between GCF and LCM?

Major and simple difference betwen GCF and LCM is that GCF gives you the greatest common factor while LCM finds out the least common factor possible for the given numbers.

What is the relation between LCM and GCF (Greatest Common Factor)?

GCF and LCM of two numbers can be related as GCF(18, 85) = ( 18 * 85 ) / LCM(18, 85) = 1.

What is the GCF of 18 and 85?

GCF of 18 and 85 is 1.

Ram has 18 cans of Pepsi and 85 cans of Coca Cola. He wants to create identical refreshment tables that will be organized in his house warming party. He also doesn't want to have any can left over. What is the greatest number of tables that Ram can arrange?

To find the greatest number of tables that Ram can stock we need to find the GCF of 18 and 85. Hence GCF of 18 and 85 is 1. So the number of tables that can be arranged is 1.

Rubel is creating individual servings of starters for her birthday party. He has 18 pizzas and 85 hamburgers. He wants each serving to be identical, with no left overs. Can you help Rubel in arranging the same in greatest possible way?

The greatest number of servings Rubel can create would be equal to the GCF of 18 and 85. Thus GCF of 18 and 85 is 1.

Ariel is making ready to eat meals to share with friends. She has 18 bottles of water and 85 cans of food, which she would like to distribute equally, with no left overs. What is the greatest number of boxes Ariel can make?

The greatest number of boxes Ariel can make would be equal to GCF of 18 and 85. So the GCF of 18 and 85 is 1.

Mary has 18 blue buttons and 85 white buttons. She wants to place them in identical groups without any buttons left, in the greatest way possible. Can you help Mary arranging them in groups?

Greatest possible way in which Mary can arrange them in groups would be GCF of 18 and 85. Hence, the GCF of 18 and 85 or the greatest arrangement is 1.

Kamal is making identical balloon arrangements for a party. He has 18 maroon balloons, and 85 orange balloons. He wants each arrangement tohave the same number of each color. What is the greatest number of arrangements that he can make if every balloon is used?

The greatest number of arrangements that he can make if every balloon is used would be equal to GCF of 18 and 85. So the GCF of 18 and 85 is 1.