Các câu hỏi tương tự
1+ 1/4+1/8+1/16
2-1/8-1/12-1/16
4/99*18/5:12/11+3/5
(1-3/4)*(1+1/3):(1-1/3)
2 tính : a) 1+1/4+1/8+1/16 =
=
b) 2-1/8-1/12-1/16 =
=
c) 4/99 x 18/5 : 12/11 + 3/5 =
=
d) ( 1-3/4 ) x ( 1+ 1/3 ) : ( 1- 1/3 ) =
=
1. tinh nhanh: 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128
2. tim x: ( x + 1/2 ) + ( x +1/4 ) + ( x + 1/8 ) + ( x + 1/16 ) = 1
D = ( 1/4 + 1/24 + 1/124) : ( 3/4 + 3/24 + 3/124) + ( 2/7 + 2/17 + 2/127) : (3/7 + 3/17 + 3/127)
1+ 1/4 +1/8+1/16
2 - 1/8 _ 1/12_1/16
tính nhanh p/s 1+ 5/4 + 5/8 + 5/16 + 5/32 + 5/64b) 1/3 +1/9 + 1/27 + 1/81 +...........+ 1/59049c) 3/2 + 3/8 + 3/32 +3/128 + 3/512d) 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256 giúp mình với
Đọc tiếp
tính nhanh p/s 1+ 5/4 + 5/8 + 5/16 + 5/32 + 5/64
b) 1/3 +1/9 + 1/27 + 1/81 +...........+ 1/59049
c) 3/2 + 3/8 + 3/32 +3/128 + 3/512
d) 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256 giúp mình với 
Ghi lời giải đầy đủ nhé cảm ơn ạTính nhanh : a, A 1 + 4 + 16 + 64 + .........+ 16384 + 65536 b, B 1/2 + 1/4 + 1/8 + 1/16 + ..........+ 1/128 + 1/256 c, C 4/1x5 + 4/5x9 + 4/8x13 +...........+ 4/81/85 + 4/81x89d, D 1/1x4 + 1/4x7 + 1/7x10 + ..........+ 1/301x304 + 1/304x307e, E 1/2 + 1/6 + 1/12 + 1/20 + 1/30 +........+ 1/110 + 1/132 g, G 2/1x6 + 2/6x11 + 2/11x16 + 2/16x21+........+ 2/91x96 + 2/96x101
Đọc tiếp
Ghi lời giải đầy đủ nhé cảm ơn ạ
Tính nhanh :
a, A= 1 + 4 + 16 + 64 + .........+ 16384 + 65536
b, B= 1/2 + 1/4 + 1/8 + 1/16 + ..........+ 1/128 + 1/256
c, C= 4/1x5 + 4/5x9 + 4/8x13 +...........+ 4/81/85 + 4/81x89
d, D= 1/1x4 + 1/4x7 + 1/7x10 + ..........+ 1/301x304 + 1/304x307
e, E= 1/2 + 1/6 + 1/12 + 1/20 + 1/30 +........+ 1/110 + 1/132
g, G= 2/1x6 + 2/6x11 + 2/11x16 + 2/16x21+........+ 2/91x96 + 2/96x101
tinh bang cach thuan tien nhat
1/2+1/6+1/12+1/20
1/2+1/6+1/12+1/20+..........+1/9900
1/2+1/3+1/4+1/8+1/16
1/2+1/3+1/4+1/8+1/16+........+1/512
B=2*4+2*4*8+4*8*16+8*16*32 / 3*4+2*6*8+4*12*16+8*24*32 các bạn có thể giả bằng 1 số nhân với 1 tổng ko ?