Question

在1—100的自然数中选9个数,使它们的倒数之和为1

Answer 1

1

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

=3/6+1/4+3/24+1/16+1/32+3/96

=1/3+1/6+1/4+1/24+1/12+1/16+1/32+1/96+1/48