Solution - Greatest common factor (GCF)
3
Step by Step Solution
Calculate Greatest Common Factor for :
27, 21
Factorize of the above numbers :
27 = 33
21 = 3 • 7
Build a prime factors table
| Prime Factor | Number 27 | Number 21 | G.C.F (min) |
|---|---|---|---|
| 3 | 3 | 1 | 1 |
| 7 | 0 | 1 | 0 |
GCF = 3
Greatest Common Factor is :
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