0
To find the Highest Common Factor (HCF) of 189 and 231, you first need to list the factors of each number. The factors of 189 are 1, 3, 7, 9, 21, 27, 63, and 189. The factors of 231 are 1, 3, 7, 11, 21, 33, 77, and 231. The largest number that appears in both lists is 21, so the HCF of 189 and 231 is 21.
I suggest you learn to use Euclid's algorithm, as the method that is applicable to all sorts of numbers, large and small. Here is the first step:The remainder of the division of 231 by 189 is 42. Therefore, gcf(231, 189) is the same as gcf(189, 42).
Continue by dividing 189 by 42, and getting the remainder, etc.
(For fairly small numbers, an alternative method is to split each number into prime factors, and check the common prime factors between the two numbers.)
Factor them.
3 x 3 x 3 x 7 = 189
3 x 7 x 11 = 231
Select the common factor.
The GCF is 3.
- You factorise 189 = 3*3*11
- You factorise 231 = 3*7*11
- The common factors are 3 and 11 so you multiply them: 3*11 = 33
- The HCF is 33.
Add your answer:
Earn +20 pts
what is the answer of 257+231-456+568-789=?
-189
Find the LCM of 21 and 27?
The LCM is 189.
What is multiples of 21?
21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, 273, . . .
What is the gcf of 189 in algebra?
You need at least two numbers to find a GCF.
What is the LCM of 189 and 105?
189 = 3 x 3 x 3 x 7; 105 = 3 x 5 x 7. Common factors are 3 and 7 so LCM = product /HCF ie 189 x 105/21 = 945
What is HCF of 525 and 231?
The HCF of 525 and 231 is 21
What is HCF of 189?
Ah, the Highest Common Factor (HCF) of 189. Let's take a moment to appreciate the beauty of numbers coming together. The HCF of 189 is 9, as it is the largest number that divides evenly into 189. Embrace the harmony of mathematics, my friend, and let the numbers guide you on your journey.
what is the answer of 257+231-456+568-789=?
-189
What is the HCF of 189 and 84?
The Highest Common Factor (HCF) of 189 and 84 is the largest positive integer that divides both numbers without leaving a remainder. To find the HCF, you can use the Euclidean algorithm, which involves repeatedly dividing the larger number by the smaller number and using the remainder as the new divisor until the remainder is zero. In this case, the HCF of 189 and 84 is 21.
What is the HCF of 189 and 221?
The GCF is 1.
What is the HCF of 189 as a prime?
The prime factorization of 189 is 3 x 3 x 3 x 7. You need at least two numbers to find a GCF.
What is the hCF of 231 and 315?
Oh, dude, the highest common factor (HCF) of 231 and 315 is 21. It's like the biggest number that can divide both of them without leaving a remainder. So yeah, 21 is the cool kid in town when it comes to these two numbers.
What is the highest common factor of 189 and 147?
Prime factors of 189 are 33 and 7Prime factors of 231 are 3, 7, and 11HCF of 189 and 231 is 7
What is the greatest common factor of 189 and 142?
The GCF is 1.
Hcf of 168 and 189?
I have some options 14,15,19,16,21
What are the greatest common factors for 189 441 and 63?
63 is the HCF
What is the highest common factor of 84 and 231?
The GCF is 1.
