511/256
ban nhe
tk nhe
tk minh minh tk lai cho
511/256
ban nhe
tk nhe
tk minh minh tk lai cho
Tính nhanh:
a)1/2+1/6+1/12+...........+1/1990+1/10100
b)1/2+1/4+1/8+.............+1/256+1/512
tính nhanh
a,1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
b,1/1*2+1/2*3+1/3*4+1/5*6+.....+1/9*10
Tính nhanh:1/2+1/4+1/8+...+1/256
Bài 1: Tính nhanh
a) 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/128 + 1/256
b) 1/3 + 1/9 + 1/27 + 1/81 + 1/243 + 1/729
c)1/2 + 1/6 + 1/12 + 1/20 + 1/30
tính bằng 2 cách
nhanh nhé
tính nhanh ;
a) (1-1/2)x(1-1/3)x(1-1/4)x....x(1-1/2014)x(1-1/2015)
b) 1/2+1/4+1/8+....+1/256
c) 5/2+5/4+5/8+....+5/256
tính nhanh
1/2+1/4+1/8+1/16+.......+1/256+1/512
Tính nhanh
1/2 + 1/4 + 1/8 +................ + 1/128 + 1/256
Tính nhanh : 1+1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512
Tính nhanh tổng A biết :A =1/2+1/4+1/8+1/16+....+1/256+1/512