1+2+3+4+...+100
100+99+98+97+...+1
=101+101+101+101+...+101):2
=10100:2
=5050
Đúng 0
Bình luận (0)
1+2+3+4+...+100
100+99+98+97+...+1
=101+101+101+101+...+101):2
=10100:2
=5050
Tinh tong
1*2+2*3+#*4+4*5+...+99*100
tinh tong A :
A = 1/2 + 1/3 + 1/4 +. . .+ 1/99 + 1/100
Tinh nhanh tong sau :
M = 1 + 2 + 3 + 4 + 5 + ... + 99 + 100 + 101
bai 1 tinh tong:
S=1+2+3+4+...+99+100
giai gium mink voi nha
tinh tong sau:1+4+9+16+....+100.tong tren co ket qua la
tinh tong
S = 1 + 3 + 5 + ...+ 99
A = 1 + 2 + 3 + ...+100
B = 2 + 4 + 6 + ..+ 2016
*chu y : neu quy luat
tinh tong: 1+4+9+16+...+100
tinh tong 1+4+9+16+....+100?
Tinh tong 1+ 4 + 9+16 + ... 100