13 Oct '02 12:22

(ABC)^2=CCCDE each letter stands for a different didgit, and C is

twice E. what does each letter stand for???

twice E. what does each letter stand for???

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New York City14 Oct '02 19:58Well, since C has to be twice E, the only single digits that are twice

another single digit are 2, 4, 6 and 8. No matter how many digits

there are in a number, if you square it, the last number is the last

digit of the square of the last digit of the number you're squaring.

(for example, the last digit of 559 squared must be 1, since 9x9 is

81). So the only number out of those four whose last digit of its

square is half the number itself is 8. Therefore, C must be 8, and E

must be 4.

After that I crapped out, you're left with possibilities: 88804, 88814,

etc., and I just plugged them into a calculator. Let me know if there's

a more elegant method for figuring out the other digits.

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