Các câu hỏi tương tự
A=-1/20+-1/30+-1/42+-1/56+-1/72+-1/90+-1/110+-1/132
1/20+1/30+1/42+1/56+1/72+1/90+1/110+1/132+1/156 = ?
1/30+1/42+1/56+1/72+1/90+1/110+1/132
Cho mk hỏi bài này chút na:
Tính: 1/20+1/30+1/42+1/56+1/72+1/90+1/110+1/132
A=1/30+1/42+1/56+1/72+1/90+1/110+1/132
A=1/30+1/42+1/56+1/72+1/90+1/110+1/132
B= 1/30 + 1/42 + 1/56 + 1/72 + 1/90 + 1/110 + 1/132
A = 1/30+1/42+1/56+1/72+1/90+1/110+1/132
tính nhanh: 1/30 + 1/42 + 1/56 + 1/72 + 1/90 + 1/110 + 1/132