1.<,>,= ?
256 x 6.....512 x 3
512 x 3.....256 x 6
999 x 2.....1000
512 x 5.....1024
1024.....512 x 5
1024.....512 x 2
512.....256 x 2
256.....128 x 2
128.....64 x 2
64.....32 x 2
32.....16 x 2
256 x 6=512 x 3
512 x 3=256 x 6
999 x 2>1000
512 x 5>1024
1024<512 x 5
1024=512 x 2
512=256 x 2
256=128 x 2
128=64 x 2
64=32 x 2
32=16 x 2
1+1=?
2+2=?
4+4=?
8+8=?
16+16=?
32+32=?
64+64=?
128+128=?
256+256=?
512+512=?
1024+1024=?
2048+2048=?
4096+4096=?
Giải đi
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
1+1=2
2+2=4
4+4=8
8+8=16
16+16=32
64+64=128
128+128=256
512+512=1024
2048+2048=4096
xong
1+1=2
2+2=4
4+4=8
8+8=16
16+16=32
32+32=64
64+64=128
128+128=256
256+256=512
512+512=1024
1024+1024=2048
2048+2048=4096
4096+4096=8192
Tính
a. 1 + 2 + 2 + 4 + 8 + 16 + 32 + 64 + 128 + 256 + 512
b.1 x 2 + 2 x 3 + 3x4 + 4 x 5 + ... + 99x100
cho minh cách lam voi.thanks
Tính nhanh
1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 + 256 + 512 + 1024 + 2048
Các bạn giúp mình đi mình đang gấp lắm
1+2+4+8+16+32+64+128+256+512+1024+2048
=1+(2+8)+(4+16)+(32+128)+(64+256)+(512+2048)+1024
=1+10+20+160+320+2560+1024
=4095
1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 + 256 + 512 + 1024 + 2048 = 4095
k nha 
công chúa nụ cười =_= ^_^
1 200-18 :(372:3 *x-1)-28=166
(7*13+8*13):(9va2/3-x)=39
x=(6va3/5:s6-0,125 *8+2va2/15*0,03)*11/4
(100-99+98-97+96-95+....+4-3+2-1):50 +2010-12*x=91
2 A= 1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024
B=27.45+27.55/2+4+...+16+18
Tính nhẩm.
a) 113 x 10
810 : 10
b) 234 x 100
7 000 : 100
c) 3 570 x 1 000
650 000 : 1 000
a) 113 x 10 = 1 130
810 : 10 = 81
b) 234 x 100 = 23 400
7 000 : 100 = 70
c) 3 570 x 1 000 = 3 570 000
650 000 : 1 000 = 650
Tìm x, biêt:
(1/8+1/16+1/32+1/64+1/128+1/256)*x=1/512
giúp mk nha
Đặt \(A=\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}+\frac{1}{128}+\frac{1}{256}\)
\(A=\frac{1}{2^3}+\frac{1}{2^4}+\frac{1}{2^5}+\frac{1}{2^6}+\frac{1}{2^7}+\frac{1}{2^8}\)
\(2A=\frac{1}{2^2}+\frac{1}{2^3}+\frac{1}{2^4}+\frac{1}{2^5}+\frac{1}{2^6}+\frac{1}{2^7}\)
\(2A-A=\left(\frac{1}{2^2}+\frac{1}{2^3}+\frac{1}{2^4}+\frac{1}{2^5}+\frac{1}{2^6}+\frac{1}{2^7}\right)-\left(\frac{1}{2^3}+\frac{1}{2^4}+\frac{1}{2^5}+\frac{1}{2^6}+\frac{1}{2^7}+\frac{1}{2^8}\right)\)
\(A=\frac{1}{2^2}-\frac{1}{2^8}\)
\(A=\frac{1}{4}-\frac{1}{256}=\frac{63}{256}\)
\(\Rightarrow\frac{63}{256}.x=\frac{1}{512}=\frac{1}{2^9}\)
\(\Rightarrow\frac{63}{2^8}.x=\frac{1}{2^9}\)
\(\Rightarrow x=\frac{1}{2^9}:\frac{63}{2^8}=\frac{1}{2^9}.\frac{2^8}{63}=\frac{1}{2.63}=\frac{1}{126}\)
Ủng hộ mk nha !!! ^_^
1+1
2+2
4+4
8+8
16+16
32+32
64+64
128+128
256+256
512+512
1024+1024
2048+2048
1+1=2
2+2=4
4+4=8
8+8=16
16+16=32
32+32=64
64+64=128
128+128 = 256
256+256=512
512+512= 1024
1024+1024 = 2048
2048 + 2048 = 4096
1+1=2
2+2=4
4+4=8
8+8=16
16+16=32
32+32=64
64+64=128
128+128=256
256+256=512
512+512=1024
1024+1024=2048
2048+2048=4096
1+1=2
2+2=4
4+4=8
8+8=16
16+16=32
32+32=64
64+64=128
128+128=256
256+256=512
512+512=1024
1024+1024=2048
2048+2048=4096
Tính nhẩm.
a) 48 256 x 10 5 437 x 100 7 192 x 1 000
b) 625 400 : 100 395 800 : 10 960 000 : 1 000
a) 48 256 x 10 = 482 560
5 437 x 100 = 543 700
7 192 x 1 000 = 7 192 000
b) 625 400 : 100 = 6 254
395 800 : 10 = 39 580
960 000 : 1 000 = 960
Tính nhẩm:
a: 48 256 x 10 = 482 560 5 437 x 100 = 543 700 7 192 x 1 000 = 7 192 000
b) 625 400 : 100 = 6 254 395 800 : 10 = 39580 960 000 : 1 000 = 960.
#Linh
