Find the GCF 72 , 144 , 168

Math
72 , 144 , 168
Find the common factors for the numerical part:
72,144,168
The factors for 72 are 1,2,3,4,6,8,9,12,18,24,36,72.
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The factors for 72 are all numbers between 1 and 72, which divide 72 evenly.
Check numbers between 1 and 72
Find the factor pairs of 72 where x⋅y=72.
xy17223632441861289
List the factors for 72.
1,2,3,4,6,8,9,12,18,24,36,72
1,2,3,4,6,8,9,12,18,24,36,72
The factors for 144 are 1,2,3,4,6,8,9,12,16,18,24,36,48,72,144.
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The factors for 144 are all numbers between 1 and 144, which divide 144 evenly.
Check numbers between 1 and 144
Find the factor pairs of 144 where x⋅y=144.
xy11442723484366248189161212
List the factors for 144.
1,2,3,4,6,8,9,12,16,18,24,36,48,72,144
1,2,3,4,6,8,9,12,16,18,24,36,48,72,144
The factors for 168 are 1,2,3,4,6,7,8,12,14,21,24,28,42,56,84,168.
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The factors for 168 are all numbers between 1 and 168, which divide 168 evenly.
Check numbers between 1 and 168
Find the factor pairs of 168 where x⋅y=168.
xy11682843564426287248211214
List the factors for 168.
1,2,3,4,6,7,8,12,14,21,24,28,42,56,84,168
1,2,3,4,6,7,8,12,14,21,24,28,42,56,84,168
List all the factors for 72,144,168 to find the common factors.
72: 1,2,3,4,6,8,9,12,18,24,36,72
144: 1,2,3,4,6,8,9,12,16,18,24,36,48,72,144
168: 1,2,3,4,6,7,8,12,14,21,24,28,42,56,84,168
The common factors for 72,144,168 are 1,2,3,4,6,8,12,24.
1,2,3,4,6,8,12,24
The GCF (HCF) of the numerical factors 1,2,3,4,6,8,12,24 is 24.
24
Find the GCF 72 , 144 , 168

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