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Dec 10, 2005
A * BCDEF = GGGGGG 
What is the value of "G" ?
Dec 09, 2005
There is a 6 digit decimal number. If you multiply that number with 2, 3, 4, 5, and 6 you get numbers which contain the same 6 digits. What is that number?
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Brain Teasers

Here are some of the questions that the code4bill contestants answered. How about trying your hand at them?
Multiply 14332 represented in base -7 with 16430 represented in base -8 and represent the output in base -9.
An array contains 9 occurrences of 0s, 8 occurrences of 1s and 7 occurrences of 2s in any order. The array is to be sorted using only swap operations. What is the minimum number of swaps needed in the worst case to sort the array?
You are given an infinite number of cookie boxes containing either 6, 9 or 400 cookies. You are allowed to use these boxes in any combination so desired. What is the maximum number of cookies that you cannot give out using the above boxes?

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