s= 1/5+1/13+1/14+1/15+1/61+1/62+1/63.CMR:3/7<S<1/2
chứng minh rằng s=1/5+1/13+1/14+1/15+1/61+1/62+1/63<1/2
Chứng minh S = 1/5 +1/13+ 1/14+ 1/15 +1/61+ 1/62 <1/2
Chứng minh S = 1/5 +1/13+ /14+1/15+1/61+1/62+1/63 < 1/2
chứng minh rằng: S=1/5+1/13+1`/14+1/15+1/61+1/62+1/63<1/2
chung minh rang :
S= 1/5+1/13+1/14+1/15+1/61+1/62+1/63<1/2
Chứng minh
S= 1/5+1/13+1/14+1/15+1/61+1/62+1/63<1/2
Chứng minh rằng ; S = 1/5+1/13+1/14+1/15+1/61+1/62+1/63 < 1/2
ai nhanh nhất mình sẽ tick cho đấy
Chứng minh;
S=1/5+1/13+1/14+1/15+1/61+1/62+1/63<1/2
S=1/2+1/2^2+1/2^3+...+1/2^20<1