Question
Find the prime factorisation number by factor tree method and division method.
144
144
✓
Answer
144
144
∴ 144 = 2 × 2 × 2 × 2 × 3 × 3
Also
144 = 2 × 72 = 2 × 2 × 36
= 2 × 2 × 2 × 18 = 2 × 2 × 2 × 2 × 9
= 2 × 2 × 2 × 2 × 3 × 3
∴ 144 = 2 × 2 × 2 × 2 × 3 × 3
144∴ 144 = 2 × 2 × 2 × 2 × 3 × 3
Also
| 2 | 144 |
| 2 | 72 |
| 2 | 36 |
| 2 | 36 |
| 2 | 18 |
| 3 | 9 |
| 3 | 3 |
| 3 | |
| 1 |
144 = 2 × 72 = 2 × 2 × 36
= 2 × 2 × 2 × 18 = 2 × 2 × 2 × 2 × 9
= 2 × 2 × 2 × 2 × 3 × 3
∴ 144 = 2 × 2 × 2 × 2 × 3 × 3
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