Question

试求2的三十二次方+2的三十次方+2的二十九次方+……+2+1的值

Answer 1

2^32+2^30+2^29+...+2+1

=2^32+2^31+2^30+2^29+...+2+1-2^31

=(1-2^33)/(1-2)-2^31

=2^33-2^31-1