| Arithmetic
Solution (continued) |
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| • | Teacher:
Can both numbers be even? |
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| • | Student:
Yes |
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| • | Teacher:
Are you sure? What do we get, then, |
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| when
1 is added to the larger number? Is it even |
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| or
odd? Could an odd number be the double of |
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| the
lesser number? |
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| (continued) |
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