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Question
Factorise into primes: 250.
Sum
Solution
Vertical arrangement:
| 2 | 250 |
| 5 | 125 |
| 5 | 25 |
| 5 | 5 |
| 1 |
250 = 2 × 5 × 5 × 5.
Horizontal arrangement:
250 = 2 × 125
250 = 2 × 5 × 25
250 = 2 × 5 × 5 × 5.
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