TK
13,25:0,5+13,25:0,25+13,25:0,125
=13,25:(0,5+0,25+0,125)
=13,25:0,875
=15,142...
\(13,25:0,5+13,25:0,25+13,25:0,125\\ =13,25\times2+13,25\times4+13,25\times8\\ =13,25\times\left(2+4+8\right)\\ =13,25\times14\\ =185,5\)
giúp mình với mọi người ơi
1/2+1/4+1/8+1/16+1/32+..........+1/512
= 13.25 x 2 + 13.25 x 4 + 13.25 x 8
= 13.25 x ( 2 + 4 + 8)
= 13.25 x 14
= 185.5