Mr. BB, You forgot the sage advice I’ve offered to you many times: You have to be smarter than the machine you are using. The machine gave you an answer and you believe it –it must be true!
The machine is correct, so it is smart. The information you gave to the machine is not correct, so you are not smarter than the machine.
The question clearly indicates. That Wednesday, December 1st, 2004 was the first day of Lucy’s life. So … adding a thousand days to this would give the 1001st day.
This type of question is normally solved using modulo arithmetic: 999 mod 7 = 5. If Wednesday is the first day then Monday is the fifth day.
I bet you are wondering why it’s 999 mod 7 instead of 1000 mod 7. I can answer your question, but I’ll let you figure it out –you really need the practice!
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