\(\frac{1}{2}-\frac{1}{3}\cdot\frac{1}{4}\)
=\(\frac{1}{2}-\frac{1}{3.4}\)
=\(\frac{1}{2}-\frac{1}{12}\)
=\(\frac{6}{12}-\frac{1}{12}\)
=\(\frac{6-1}{12}\)
=\(\frac{5}{12}\)
Tính:(1-1/2x1/2)x(1-1/3x1/3)x(1-1/4x1/4)x…x(1-1/2007x1/2007)
Tính:
(1-1/2x1/2)x(1-1/3x1/3)x(1-1/4x1/4)x…x(1-1/2007x1/2007)
Tính:
a) 11/3-2/3x5/6. b) 13/2+7/6:2/3
c) 28/9-3/4+1/3. d) 5/8:2/3x1/5
1/1x1/2+1/2x1/3+1/3x1/4+1/4x1/5+1/5x1/6
tính 1 1/3x1 1/8x1 1/5x1 1/24x......x1 1/99
mik cần gấp
tính
1/1/3x1/1/8x1/1/15x1/1/24x...x1/1/99
a, 1/2 x 1/3 + 1/3x1/4 +1/4 x 1/5 + 1/5 x 1/6 + 1/6 x 1/7 + 1/7 x 1/8 + 1/8 x 1/9 = ?
tinh bang cach thuat tien nhat
a 2x 3/4 +2 x 1/4
b 3x 2/3 -3x1/3
Tính tổng
1/1x1/2x1/3x1/4x...x99/100