\(1-\frac{1}{2}-\frac{1}{4}-\frac{1}{8}-\frac{1}{16}-\frac{1}{32}\)\(-\frac{1}{64}\)
\(=1-\frac{32}{64}-\frac{16}{64}-\frac{8}{64}-\frac{4}{64}\)\(-\frac{2}{64}-\frac{1}{64}\)
\(=1-\left(\frac{32}{64}-\frac{16}{64}-\frac{8}{64}-\frac{4}{64}-\frac{2}{64}-\frac{1}{64}\right)\)
\(=1-\frac{1}{64}\)
\(=\frac{64}{64}-\frac{1}{64}\)
\(=\frac{63}{64}\)
1- 1/2 - 1/4 - 1/8 - 1/16 - 1/32 - 1/64 = 1/64
1 - 1/2 - 1/4 -1/8 -1/16 -1/32 -1/64 =1- 32/64 - 16/64 - 4/64 - 2/64 -1/64 = 9/64
ta có: 1=64/64; 1/2=32/64; 1/4=16/64; 1/8=8/64; 1/16=4/64 và 1/32=2/64
1-1/2-1/4-1/8-1/16-1/36-1/54= 64/64-32/64-16/64-8/64-4/64-2/64
= 32/64-16/64-8/64-4/64=2/64
=16/64-8/64-4/64-2/64
=8/64-4/64-2/64
=4/64-2/64
=2/64=1/32