1/3-1/5+1/5-1/7+1/7-1/9+...+1/43-1/45
=1/3-1/45
=14/45
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Các câu hỏi tương tự
1/1x3 + 1/3x5 + 1/5x7 + 1/7x9
1/3x5 + 1/5x7 + 1/7x9 + ... + 1/2009x2011
1/3x5+1/5x7+1/7x9+........+1/99x101
1/3x5 + 1/5x7 + 1/7x9 +...+ 1/99x101
1/1x3+1/3x5+1/5x7+1/7x9
1/3x5+1/5x7+1/7x9+...+1/999x1001
1/1x3+1/3x5+1/5x7+1/7x9 = ?
1/3x5+1/5x7+1/7x9+1/9x11+1/11x13
1/1x3+1/3x5+1/5x7+1/7x9=1/9x11