1/2+1/4+1/8+1/16+1/32+.+1/128=

x��)�3�7�6�7
b 64�F�z ����MR�>!%�v6T0G�P�042�6���yvP�m���SV<_��l��gS7<��lc��I=�+lm��k�j)�8sM;} �qF��p������hx����o��]=O;ڞ���<���dG�5�Mۉd'�p["