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letrungnghia693
2 năm trước
Cho A = 1 + 3 + 3 mũ 2 + 3 mũ 3 + ... + 3 mũ 1999 + 3 mũ 2000 . Chứng minh rằng A chia hết cho 3
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A HOLIDAY DISAPPOINTMENT Things started to go wrong as soon as we got to the hotel. We were all being completely exhausted after our long journey and looking forward to have a shower and a rest. However, we found that our room was not ready, which was very much annoying, although the manager was extremely apologetic. While we were waiting, we asked about the excursions to places of an interest which we had read about in the brochure. Imagine how we felt when we were told they had all been cancelled away! Apparently, the person responsible for organising them had left suddenly and had not been replaced. Then Sally saw a notice that pinned to the door of the restaurant, saying it was been closed for redecoration, and Peter discovered that the swimming pool was empty. When we eventually got to our room we were horrified to so find that it was at the back of the hotel, and we had a view out of a car park, which seemed to be used as a rubbish dump. We seriously began to wonder whether or not to stay. 0. √ 00. being 1............................ 2............................ 3............................ 4............................ 5............................ 6............................ 7............................ 8............................ 9............................ 10.......................... 11.......................... 12.......................... 13.......................... (TÌM LỖI SAI VÀ SỬA KÈM GIẢI THÍCH HỘ MÌNH VỚIIII)

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