Các câu hỏi tương tự
a) (1 - 1/2) x (1 - 1/3) x (1 - 1/4) x (1 - 1/5) x (1 - 1/6)
b) (1 - 1/2) x (1 - 1/4)x...x (1 - 1/2019) x (1 - 1/2020)
(1+ 1 3 ) x (1 + 1 8 ) x (1 + 1 15) x ( 1 + 1 24 ) x ... x (1 + 1 575 ) x (1 + 1 624 )
1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 2 x3 x 4 x 5 x 6 x 7 x 8 x 9 x 10 x 11 x 12 x 13 x 14 x 15 =
a,(1+1/15)x(1+1/16)x(1+1/17)x(1+1/18)
b,(1-1/19)x(1-1/20)x(1-1/21)x(1-1/22)x(1-1/23)
giúp mình nha đây là bài của thầy minh khó quá
16 tháng 5 2023 lúc 19:49
(1+1/49)x(1+1/50)x(1+1/51)x(1+1/52)x..............x(1+1/60)
(1- 1/2 )x(1-1/3)x(1-1/4)x(1-1/5)x......x(1-1/10) =
b1 :
tính : 1/1 x 2 + 1/2x3 + 1/3x4 +...+1/98x99
b2 : 1/3 x 3/5 x 5/ x ... x 97/99
b3 : a = ( 1 + 1/3 ) x ( 1 + 1+4 ) x ( 1 + 1+5) x ... ( 1+1/30)
( 1 - 1/2 ) x ( 1- 1/3 ) x ( 1- 1/4 ) x ( 1- 1/5 ) x ( 1- 1/6 )
[1-1/5]x[1-1/6]x[1-1/7]x[1-1/8]x[1-1/9]
(1+1/13)x(1+1/14)x(1+1/15)x(1+1/16)x(1+1/17)