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Common factors: 3, 5, 15.
HCF: 15.
To work out:
Make a factor tree or ladder. (Ignore the dashes)
----45
---/---\
--3----15
-------/---\
------3----5
We cannot go any further as 3 & 5 are prime.
Therefore 45 = 3 x 3 x 5.
(same with 60) 60 = 2 x 2 x 3 x 5.
The easiest way is to now make a venn diagram. Put the numbers that appear in both lists in the intersection. (3 and 5 but do not put both threes in)
my venn diagram--->(3)(3, 5) (1, 2)
Then, times the numbers in the intersection together... and voila! You get 15 which is the HCF!
--To find the LCM, multiply all the numbers in the VENN DIAGRAM together. =] \AT
What else can I help you with?
What is the greatest common factor of 25 45 60?
The highest common integral factor is 5, because 25 = 52, five is an integral factor of both 45 and 60, and 25 is not an integral factor of either 45 or 60.
What is the greatest common factor of 60 ad 45?
the GCF of 45 and 60 is 15
What is th GCF of 45 and 60?
The greatest common factor of the numbers 45 and 60 is 15.
What is the highest common factor of 45 60 and 90?
For 45, 60, 90 the GCF = 15
What is the common factor of 28 45 and 60?
1
What is 60 and 45 greatest common factor?
15
What is the greastest common factor of 45 and 60?
15
Highets common factor of 45 and 60?
15
What are the greatest common factor of 60 and 45?
15
What is the Highest common factor for 60 and 45?
15
What are the common factors of 45 an 60?
The highest common factor 15
Greatest common factor of 45 and 60?
The Greatest Common Factor (GCF) is: 15
