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| Math Central | Quandaries & Queries |
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Question from kevin, a student: ABCD What does each letter stand for? |
Kevin,
- The sum is less than 10,000. What does this tell us about A?
- D+D+D+D ends in A. What do we know about A now?
- What values can D have? In each case, is the first digit of
D+D+D+D odd or even?
- Is E odd or even? Looking at the first column, what is E?
(And so on)
Good Hunting!
RD
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