Các câu hỏi tương tự
tính : 1.3 + 3.5 + 5.7 +.... + 97.99
A = 1.3 +3.5 + 5.7 + ...+ 97.99
Tính:1.3+3.5+5.7+7.9+......+97.99
4/1.3 + 4/3.5 + 4/5.7 +...+ 4/ 97.99
S=1.3+3.5+5.7+7.9+...+97.99+99.101
1/1.3+1/3.5+1/5.7+....................................+1/97.99
3/1.3+3/3.5+3/5.7+....+3/97.99
tinh nhanh 1.3+3.5+5.7+............+97.99=
tinh
1.3+3.5+5.7+.................+97.99