\(2+4+8+16+...+1024+2048=2\left(1+2+4\right)+16\left(1+2+4\right)+128\left(1+2+4\right)+1024\left(1+2\right)=\left(2+16+128+1024\right)\left(1+2+4\right)+3072=1022+3072=4094\)
tính nhanh
A=2+4+8+16+...+1024+2048
A=2+4+8+16+.........+1024+2048
tính nhanh
Tính nhanh
2 + 4 + 8 + 16 + .... + 1024 + 2048
2+4+8+16+...1024+2048 = ?
1-1/2-1/4-1/8-1/16-1/32-...-1/1024-1/2048
tính nhanh
1/2+1/4+1/8+1/16+...................................+1/1024+1/2048
1. Tính nhanh
a. A = 2+4+8+16+...+1024+2048
b. B = 17,75 + 16,25 + 14,75 + 13,25 + ...+4,25 + 2,75 + 1,25
Tính nhanh:
P = 2 + 4 + 6 + 8 + 16 + ..... + 1024 + 2048
R = 20092009 x 200820082008 - 200920092009 X 20082008
( Các bạn giúp mik với ) Thank
a) 2+4+8+16+32+64+128+256+512+1024+2048
b) \(\frac{\left(2+4+6+8+...+1000\right)nhan10}{2+4+8+16+...+512-2}\)
