Cho B=1/3+1/16+1/19+1/21+1/61+1/72+1/83+1/94
So sánh B với 3/5
Cho A=1/3 + 1/16 + 1/19 + 1/21 + 1/61 + 1/72 + 1/83 + 1/94
So sánh A với 3/5.
Cho A= 1/3+1/16+1/19+1/21+1/61+1/72+1/83+1/94
So sánh A với 3/5
Cho B=\(\frac{1}{3}+\frac{1}{16}+\frac{1}{19}+\frac{1}{21}+\frac{1}{61}+\frac{1}{72}+\frac{1}{83}+\frac{1}{94}\)
So sánh B với \(\frac{3}{5}\)
a) Cho b = 1/3 + 1/16 + 1/19 + 1/21 + 1/61 + 1/72 + 1/83 + 1/94.
So sánh B với 3/5
b) Tính nhanh:
A = 2/3x5 + 3/5x8 +11/8x19 + 13/19x32 + 25/32x57 + 30/57x87
Mình đang cần gấp!!!!
Bài 3
Cho B =\(\frac{1}{3}+\frac{1}{16}+\frac{1}{19}+\frac{1}{21}+\frac{1}{61}+\frac{1}{72}+\frac{1}{83}+\frac{1}{94}\)
So sánh B=\(\frac{3}{5}\)
chứng minh:1/3+1/16+1/19+1/21+1/61+1/72+1/83+1/94<3/5
chứng minh:1/3+1/16+1/19+1/21+1/61+1/72+1/83+1/94<3/5
chung minh D=1/3+1/16+1/19+1/21+1/61+1/72+1/83+1/94< 3/5