tính nhanh:
a/(12560 - 2060-500) : (72+74+76+78+80+82+84+86+88+90)
b/(123/100x1/9-10/100x1/9-13/100x1/9)x(23/100-1/10-13/100)
Tìm x:
35,75+x=100x1-1+1
tu 1 den 100000000000000 có bao nhiêu chữ số 1
1+(1+2)+(1+2+3)+...+(1+2+...+100) /1x100+2x99+3x98+...+100x1
1+(1+2)+(1+2+3)+. . .+(1+2+3+...+100) / 1x100+2x99+3x98+...+100x1
100x1-1
tích mình nhé các bạn
tính nhanh:
a/ (123/100x1/9-10/100x1/9-13/100x1/9)
b/(12560-2060-500) : (72+74+76+78+80+82+84+86+88+90)
Tính nhanh:
1+(1+2)+(1+2+3)+(1+2+3+4)+.......+(1+2+3+...+100)/100x1+99x2+98x3+.........+2x99+1x100.
tính nhanh:
a/ (123/100x1/9-10/100x1/9-13/100x1/9)
b/(12560-2060-500) : (72+74+76+78+80+82+84+86+88+90)
