1+1+2
=2+2
=4
k mih nha moi nguoi
ai k mih mih k lai cho
1+1+2
= 2+2
=4
vậy 1+1+2=4 hoặc 1+1+2= 1+1+2
A=1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+...(1000) số 1
B=2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+2+...+2(13512 số 2)
tổng của A và B là
Tính Nhanh
a) ( 1/2 + 1/3 + 1/4 + 1/5 + 1/6 ) - ( 1/2 + 1/3 + 1/4 + 1/5 )
b) ( 2/3 + 2/4 + 2/5 + 2/6 + 2/7 ) - ( 2/4 + 2/5 + 2/6 + 2/7 + 28 )
1+2-1+2-1+2-1+2-1+2-1+3=??...!?
1*1*1*11*1*11*1*1*=
2*2*2*2*22*2*2*2*2*2*2*0*2*2*2*=
tim y: 2010/2017: 1/2+ 6/2017: 1/2+ 1/2017: 1/2: y = 2010/2017: 1/2+ 6/2017: 1/2+ 1/2017: 1/2
Các bn giải hộ mình câu lày
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 2 + 2 + 2 + 2 + 3 + 3 + 3+ 1 + 4 + 4 + 2 + 5 + 5 + 6 + 4 + 7 + 3 + 8 + 2 + 9 + 1 + 0 + 0 + 0 + 0 + 0
2/3+5/2-3/4=
2/5*1/2/1/3=
2/9/2/9/1/2=
4/5-1/2+1/3=
1/2*1/3+1/4=
2/7/2/3-1/7=
2/3+5/2-3/4=
4/5-1/2+1/3=
2/5×1/2:1/3=
1/2×1/3+1/4=
2/9:2/9×1/2=
2/7:2/3-1/7=
Evaluate: (1/1 + 2) + (1/1 + 2 + 3) + (1/1 + 2 + 3 + 4) + ... + (1/1 + 2 + 3 + ... + 50)