GCD of 72, 12, 42 Calculator
Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Make use of GCD Calculator to determine the Greatest Common Divisor of 72, 12, 42 i.e. 6 largest integer that divides all the numbers equally.
GCD of 72, 12, 42 is 6
GCD(72, 12, 42) = 6
Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345
GCD of numbers 72, 12, 42 is 6
GCD(72, 12, 42) = 6
GCDof 72,12,42 is 6
Given Input numbers are 72, 12, 42
To find the GCD of numbers using factoring list out all the divisors of each number
Divisors of 72
List of positive integer divisors of 72 that divides 72 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
Divisors of 12
List of positive integer divisors of 12 that divides 12 without a remainder.
1, 2, 3, 4, 6, 12
Divisors of 42
List of positive integer divisors of 42 that divides 42 without a remainder.
1, 2, 3, 6, 7, 14, 21, 42
Greatest Common Divisior
We found the divisors of 72, 12, 42 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 72, 12, 42 is 6.
Therefore, GCD of numbers 72, 12, 42 is 6
Given Input Data is 72, 12, 42
Make a list of Prime Factors of all the given numbers initially
Prime Factorization of 72 is 2 x 2 x 2 x 3 x 3
Prime Factorization of 12 is 2 x 2 x 3
Prime Factorization of 42 is 2 x 3 x 7
Highest common occurrences in the given inputs are 21 x 31
Multiplying them we get the GCD as 6
Finding GCD of 72, 12, 42 using LCM Formula
Step1:
Let's calculate the GCD of first two numbers
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(72, 12) = 72
GCD(72, 12) = ( 72 x 12 ) / 72
GCD(72, 12) = 864 / 72
GCD(72, 12) = 12
Step2:
Here we consider the GCD from the above i.e. 12 as first number and the next as 42
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(12, 42) = 84
GCD(12, 42) = ( 12 x 42 ) / 84
GCD(12, 42) = 504 / 84
GCD(12, 42) = 6
GCD of 72, 12, 42 is 6
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
FAQs on GCD of numbers 72, 12, 42
1. What is the GCD of 72, 12, 42?
GCD of 72, 12, 42 is 6
2. Where do I get the detailed procedure to find GCD of 72, 12, 42?
You can find a detailed procedure to find GCD of 72, 12, 42 on our page.
3. How to find GCD of 72, 12, 42 on a calculator?
You can find the GCD of 72, 12, 42 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.