Các câu hỏi tương tự
tính :\(\frac{3}{2}+\frac{7}{6}+\frac{13}{12}+\frac{21}{20}+\frac{31}{30}+\frac{43}{42}+\frac{57}{56}+\frac{73}{72}+\frac{91}{90}\)
3/2+ 7/6 + 13/12 + 21/20 +31/30 + 42/41+ 57/56+ 73/71+ 91/90. mọi ng cho mình lời giải chi tiết vs ạ.
\(\frac{3}{2}+\frac{7}{6}+\frac{13}{12}+\frac{21}{20}+\frac{31}{30}+\frac{43}{42}+\frac{57}{56}+\frac{73}{72}+\frac{91}{90}\)
ai lam di mk tick cho
chi tiết cách giải
3/4+7/6+13/12+21/20+31/30+43/42+57/56+73/72+91/90+111/110 help me!
Bài 1: Tính nhanh:5/6+11/12+19/20+41/42+55/56+71/72+89/90
Bài 2:Tính nhanh: (1/1+2)+(1/1+2+3)+(1/1+2+3+4)+...+=1/1+2+3+...+50
Bài 3:Chứng minh rằng 1/3+1/7+1/13+1/21+1/31+1/43+1/57+1/73+1/91<1
91/90+73/72+57/56+43/42
Tính nhanh
A=111/110+91/90+73/72+…………+21/20+13/12+7/6+3/2
3/2 - 5/6+ 7/12- 9/20 +11/30-13/42 +15/56 - 17/72+ 19/90
3/2-5/6+7/12-9/20+11/30-13/42+15/56-17/72+19/90