Monday, April 13, 2009

ABCDE!!!!!

A five digit number is represented by ABCDE. If we add the number 1 in front of ABCDE, then times 3, the result number will be ABCDE appended by the number 1 (as shown in the figure). What is this five digit number?


1ABCDE
X      3
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ABCDE1
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