1 + 2 + 4 + 8 + 16 + 32 + ... + 1024 + 2048 + 4096 =?
KHẨN CẤP! KHẨN CẤP!
tính nhanh ;
1234.5678.(630 -315) :1996
319.45+ 55.319 /1995.1996 -1991.1995
1988.1996+1997.11+1985 /1997.1996-1995.1996
(1+2+4+8+.....+512) .(101.102-101.101-50-51) /2+4+6+8+16+....+1024+2048
(1+2+4+8+....+512).(135135.246-246246.135)/2+4+8+16+....+1024+2048
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+1/4+1/8+1/16+1/32+...+1/2048+1/4096
A=1/1.2+1/2.3+1/3.4+1/4.5+...+1/98.99+1/99.100
B=2/1.3+2/3.5+2/5.7+2/7.9+...+2/97.99+2/99.101
C=1/2+1/4+1/8+1/16+...+1/1024+1/2048
D=1/2+1/6+1/18+1/54+1/4374+1/13122 ( . (DẤU CHẤM LÀ ''NHÂN'')
Chứng minh:1/2-1/4+1/8-1/16+1/32-1/64+1/128-1/256+1/512-1/1024<1/3
Tính nhanh tổng sau:
\(A=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}+\frac{1}{128}+\frac{1}{256}+\frac{1}{512}+\frac{1}{1024}\)
tính 1+2+4+8+16+32+...+1024
giúp mk nha
C=1+2+4+8+16+32+....+512+1024
C=?
