1+1/2+〔1/3+2/3〕+〔1/4+2/4+3/4〕+…+〔1/50+2/50+…49/50〕

问题描述:

1+1/2+〔1/3+2/3〕+〔1/4+2/4+3/4〕+…+〔1/50+2/50+…49/50〕

1+1/2+〔1〕+〔1+1/2〕+〔2〕+〔2+1/2〕+···+〔24〕+〔24+1/2〕
=612.5