= 1+2+4+8+……+ 1024+ 1/2+ 1/4+ 1/8+……+ 1/ 1024

= 1+ 1+2+4+8+……+ 1024- 1+ 1/2+ 1/4+ 1/8+……+ 1/5 12+ 1/ 1024+ 1/ 1024- 1/ 1024

=2( 1*2 equals the latter item 2)+2+4+8+1024-1/2+1/4+1/8+65438.

=2*2 (equal to the last item 4)+4+8+...+1024-1+1/2+1/4+1/8+...+2/50.

=…………………………

=………………

=2* 1024- 1+ 1/2 *2- 1/ 1024

=2048- 1/ 1024

=2047 and 1023/ 1024.

If it is high school, this is the summation of geometric series. If the formula is set directly, it can only be solved by adding items according to the law in junior high school.