(1+19/92乘1)+(1+19/92乘2)+(1+19/92乘3).+(1+19/92乘10)+(1+19/92乘11)怎样计算

问题描述:

(1+19/92乘1)+(1+19/92乘2)+(1+19/92乘3).+(1+19/92乘10)+(1+19/92乘11)怎样计算

=1×11+19/92×(1+2+3+...+11)
=11+19/92×66
=11+13.63
=24.63