1+1/3+1/6+1/10+1/4950

题目

1+1/3+1/6+1/10+1/4950
写错了应该是1+1/3+1/6+1/10+......+1/4950.

答案

1+1/3+1/6+1/10+1/4950
=1+1/2+1/10+1/4950
=1+6/10+1/4950
=1+2971/4950
=1又2971/4950