Các câu hỏi tương tự
9/10-1/90-1/72-1/56-1/42-1/30-1/20-1/12-1/6-1/2 = ?
9/10 +1/90++1/72+1/56+1/42+1/30+1/20+1/12+1/6+1/2
-1/20+ -1/30+ -1/42+ -1/56+ -1/72+ -1/90=?
(-1/20)+(-1/30)+(-1/42)+(-1/56)+(-1/72)+(-1/90)
1/20+ 1/30+ 1/42+ 1/56+ 1/72+1/90
-1/20+ -1/30+ -1/42+ -1/56+ -1/72+ -1/90=?
1/20+1/30+1/42+1/56+1/72+1/90+... TÍNH.?
A= -1/20 + -1/30 + -1/42 + -1/56 + -1/72 + -1/90 = ?
-1/20+-1/30+-1/42+-1/56+-1/72+-1/90
GIÚP MÌNH NHa