\(\left(\dfrac{2+1}{2}\right)\left(\dfrac{3+1}{3}\right)\left(\dfrac{4+1}{4}\right)...\left(\dfrac{2000+1}{2000}\right)\)
\(=\dfrac{3.4.5...2001}{2.3.4...2000}=\dfrac{2001}{2}\)
Tính nhanh:
( 1 + 1/2 ) x ( 1 + 1/3 ) x ( 1 + 1/4 ) x ……. X ( 1 + 1/2000 )
Tính nhanh
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000)
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
Tính nhanh
1/2 x 1/2 + 1/2 x 1/3 + 1/3 x 1/4 + 1/4 x 1/5 + 1/5 x 1/6
1. Tính nhanh:
M = 1 x 1/2 + 1/2 x 1/3 + 1/3 x 1/4 +...+ 1/99 x 1/100
1. Tính nhanh:
M = 1 x 1/2 + 1/2 x 1/3 + 1/3 x 1/4 +...+ 1/99 x 1/100
cíu :))
tính nhanh:
1 1/2 x 1 1/3 x 1 1/4 x...x 1 1/100
Tính nhanh;
( 1- 1/2 ) x ( 1 - 1/3 ) x ( 1- 1/4 ) x ( 1 - 1/5 ) x......x ( 1 - 1 / 2003 ) x ( 1 - 1/ 2004 )
Tìm x
1 / 2 x X - 3 /4 = 5/6
Bài 1,1+2+3+...+x = 1176
Bài 3 , Tính nhanh :1/1*2+1/2*3 +1/3*4 + ...+ 1/98*99
Bài 4 , Tính nhanh :1/6 +1/12+1/20+ ...+1/110
Bài 5 , Tìm x : 1 /3 +1/6+1/10+...+1/x* (x+1:2)+2009/2011
Tính nhanh:{1+1/2}x{1+1/3}x{1+1/4}x...x{1+1/2015}=?
