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The GCF is 30.
Hi!
Here is an easy method to find the HCF of absolutely any pair of numbers.
Step 1
Find the difference between the numbers.
x - y = z
Step 2
Ask this question, 'Is z a factor of x and y?'
Another way to ask this question is, 'Are x and y in z's timetable?'
If the answer is 'YES', then z is the HCF/ GCF.
It's as simple as that.
All you have to do is substitute the letters with the numbers that you were given in the question.
Let's take 9 & 12 as examples.
12 - 9 = 3
Is 3 a factor of 12 and 9? Yes
Are 12 and 9 in 3's timetable? Yes (3 x 3 = 9, 3 x 4 = 12)
HCF/ GCF = 3
According to your question, the numbers are 180 and 210.
210 - 180 = 30
Is 30 a factor of 210 and 180? Yes
Are 210 and 180 in 30's timetable? Yes (30 x 60 = 180, 30 x 70 = 210)
HCF/GCF = 30
DISCLAIMER: This only works on two numbers.
You can ask one question. It isn't necessary to ask both questions.
Add your answer:
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What is the HCF of 210 and 385?
It is 35
Is the HCF of 140 and 210 2?
No. The prime factors of 140 are 2,2,5 and 7 The prime factors of 210 are 2,3,5 and 7 The common prime factors are 2,5 and 7 Thus the HCF is 2x5x7, or 70.
What is the HCF of 135 and 180?
Oh, dude, the "HCF" stands for the Highest Common Factor, which is like the biggest number that can divide both 135 and 180 without leaving a remainder. So, if we break it down, the prime factors of 135 are 3 x 3 x 3 x 5, and the prime factors of 180 are 2 x 2 x 3 x 3 x 5. The HCF is the product of the common prime factors with the lowest powers, which in this case is 3 x 3 x 5, which equals 45.
What is the HCF of 9 and 6?
3.
What is the HCF of 30 and 105?
The HCF of 30 and 105 is 15.
What is the HCF of 90 and 210?
The GCF is 30.
What if the HCF of 210 and 112?
HCF = 14
What is the HCF of 96 and 180?
HCF(96, 180) = 12
What is the HCF of 360 and 3780?
The GCF is 180.
What is the HCF of 180 and 360?
The Highest Common Factor (HCF) of 180 and 360 is the largest positive integer that divides both 180 and 360 without leaving a remainder. To find the HCF, we need to factorize both numbers into their prime factors. The prime factors of 180 are 2 x 2 x 3 x 3 x 5, and the prime factors of 360 are 2 x 2 x 2 x 3 x 3 x 5. By comparing the common factors, we can see that the HCF of 180 and 360 is 2 x 2 x 3 x 3, which equals 36.
What is the HCF of 210 and 84?
The GCF is 42.
What is the HCF of 210 and 385?
It is 35
What is the HCF of 210 and 480?
It is: 30
What is the HCF of 273 and 210?
21
What is the HCF of 210 and 112?
The GCF is 8.
Is 191 closer to 180 or 210?
It is closer to 180. It is 11 from 180 and 19 from 210.
What is the hcf of 245 and 210?
The GCF is 35.
