Solution - Greatest common factor (GCF)
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Step by Step Solution
Calculate Greatest Common Factor for :
20, 28 and 40
Factorize of the above numbers :
20 = 22 • 5
28 = 22 • 7
40 = 23 • 5
Build a prime factors table
| Prime Factor | Number 20 | Number 28 | Number 40 | G.C.F (min) |
|---|---|---|---|---|
| 2 | 2 | 2 | 3 | 2 |
| 5 | 1 | 0 | 1 | 0 |
| 7 | 0 | 1 | 0 | 0 |
GCF = 22
Greatest Common Factor is :
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