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| 32151. | Vivinavi Los Angeles 歯科矯正（386view/0res） |
Free talk | 2004/09/08 03:21 |
|---|---|---|---|
| 32152. | Vivinavi Los Angeles ＬＡのショッピングスポット（1kview/9res） |
Free talk | 2004/09/08 03:21 |
| 32153. | Vivinavi Los Angeles ブランドとメーカーの違いって何ですか？（518view/2res） |
Free talk | 2004/09/08 03:21 |
| 32154. | Vivinavi Los Angeles TATOO入れたい（1kview/6res） |
Free talk | 2004/09/08 03:21 |
| 32155. | Vivinavi Los Angeles ２ちゃん○る発の話（1kview/9res） |
Free talk | 2004/09/08 03:21 |
| 32156. | Vivinavi Los Angeles ＸＰの日本語設定を解除する方法は？（1kview/5res） |
Problem / Need advice | 2004/09/08 03:21 |
| 32157. | Vivinavi Los Angeles 前向きな離婚？（1kview/10res） |
Problem / Need advice | 2004/09/07 23:22 |
| 32158. | Vivinavi Los Angeles マッサージ・整体のよいお店（921view/0res） |
Problem / Need advice | 2004/09/07 22:15 |
| 32159. | Vivinavi Los Angeles デジカメで撮った写真の現像（1kview/8res） |
Problem / Need advice | 2004/09/07 16:14 |
| 32160. | Vivinavi Los Angeles 誰かおしえて（1kview/7res） |
Problem / Need advice | 2004/09/07 11:53 |
Vivinavi Los Angelesわかるかな？
- #1
-
- mimiko
- 2004/07/04 22:17
ＢＮＪＩＴＰＳＪＩ 、、暗号です。さて何でしょう！ビビナビで頭いいふりしてる人、これが解けないと本当の頭がいいとは言えないよ！答えだけ投稿してください。ヒントなしでーす。
- #118
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- まぼろし探偵
- 2004/07/21 (Wed) 00:23
- Report
数学の場合どうなんですかね？詳しいヒト教えて！
0.99999...っていうのは9が無限に続くっていう意味なら、1=0.99999...ってしてもいいんですか？それとも限りなく近いけれど違うって解釈すべきですか？う〜む？
でも、もし0.99999...=1であるとしても、「10X-X=9」「9X=9」「X=1」の式そのものは間違ってますよね。
10X-X=9X(つまり10X-1X=9X)なんだから。
最初の例題は、飽くまで10X-X=9と思わせる引っかけ。よってそこが間違い。
- #119
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- こも
- 2004/07/21 (Wed) 19:10
- Report
>#115,#116
1は0.999...ではありません。また0.999...も1ではありません。
まぼろしさんがいうように10X-X=9にはなりません。前にも言った通り
1)9.99-0.99=9ではなく
2)9.99-0.999=8.991となり
2)のように小数点以下が後者の方が一つ多くなるのでどこまで行っても９にはなりません。
>#108
1,3,6,7,9,A,B わかりませーん。
3)総合、富士、朝日？さっぱりわからん。
9)私も最初以外できません。
1)√36=6, 逆さにして9=√81 違う！んー、わからん。
- #120
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- kgrside
- 2004/07/21 (Wed) 21:46
- Report
＃17って小数点にするからわかんないだけで、分数で考えれば
(１÷９＋１)×９
ででない??
- #121
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- RATM
- 2004/07/21 (Wed) 22:17
- Report
#108さん、
追加です。
1」TBS=6
- #124
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- RATM
- 2004/07/21 (Wed) 22:41
- Report
#123さん、
おすぎとピーコは「い」ですね。
Posting period for “ わかるかな？ ” has been closed.
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