Các câu hỏi tương tự
1/2+2/4+3/6+4/8+5/10+6/12+7/14+8/16+9/18+ 10/20
1/2+2/4+3/6+4/8+5/10+6/12+7/14+8/16+9/18+10/20=?
phai co loi giai nhe!
Tính nhanh:
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20
ai nhanh mink tick cho
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+...100=
1+2-3-4+5+6-7-8+9+10-11-12+13+14-15-16+17+18-19-20...+301+302
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20= ?
Tính bằng cách thuận tiện nhất nha.
AI NHANH MK TÍCH
3. Tính nhanh:
a, (1+3+5+7+9) - (0+2+4+6+8)=.........................................................................................
b, (11+13+15+17+19) - (10+12+14+16+18)=......................................................