Solution - Greatest common factor (GCF)
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Step by Step Solution
Calculate Greatest Common Factor for :
135, 21
Factorize of the above numbers :
135 = 33 • 5
21 = 3 • 7
Build a prime factors table
| Prime Factor | Number 135 | Number 21 | G.C.F (min) |
|---|---|---|---|
| 3 | 3 | 1 | 1 |
| 5 | 1 | 0 | 0 |
| 7 | 0 | 1 | 0 |
GCF = 3
Greatest Common Factor is :
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