What is the greatest common factor of 42, 126, and 210
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calendarEducator since 2010
write12,544 answers
starTop subjects are Math, Science, and Business
To find the greatest common factor of 42, 126, and 210, we find the prime factors of the 3 numbers.
42 = 7 * 3 * 2
126 = 2 * 7 * 3 * 3
and 210 = 5 * 2 * 7 * 3
Now taking the common terms we have 7 , 3 and 2
7*3*2 = 42.
Therefore the greatest common factor or GCF is 42
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calendarEducator since 2008
write3,662 answers
starTop subjects are Math, Science, and Social Sciences
Given the numbers 42, 126, and 210
We need to find the greatest common factor ( GCF)
First we will factor each numbers.
==> 42 = 2*3*7
==> 126 = 2*3*3*7
==> 210 = 2*3*5*7
Now we will determine the common factors between all three numbers and multiply.
We notice that the common factors are 2 , 3 and 7.
Then the greatest common factor = 2*3*7 = 42