2 + 4 + 8 + 16 + 32 + 64 + 128 + 256
= ( 2 + 8 ) + ( 4 + 16 ) +( 32 + 128 ) + ( 64 + 256 )
= 10 + 20 + 160 + 320
= 510 .
Hok tot !
Đáp án: 510
Vì 2+4=6, 6+8=14, 14+16=30, 30+32=62, 62+64=126, 126+128=254, 254+256=510.
2+4+8+16+32+64+128+256
=(2+128)+(4+256)+(8+32)+(16+64)
=130+260+40+80
=(130+80)+(260+40)
=210+300
=510
Chúc bạn học tốt !
= ( 2+ 8 ) + ( 4 + 16 ) + ( 32 + 128 ) + ( 64 + 256 )
= 10 + 20 + 160 + 320
= 30 + 480
= 510
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2+4+8+16+32+64+128+256
=(2+128)+(4+256)+(8+32)+(16+64)
= 130 + 260 + 40 + 80
= 510
\(2+4+8+16+32+64+128+256\)
\(=\left(2+8\right)+\left(4+16\right)+\left(32+128\right)+\left(64+256\right)\)
\(=10+20+160+320\)
\(=510\)
2 + 4 + 8 + 16 + 32 + 64 + 128 + 256
= ( 2 + 8 ) + ( 4 + 16 ) + ( 32 + 128 ) + ( 256 + 64 )
= 10 + 20 + 160 + 320
= 30 + 160 + 320
= 190 + 320 = 510
2+ 4+8+64+128+256
=(2+8) +(4+16)+(32+128)+(64+256)
= 10 + 20 + 160 + 320
= 510