The term from the end of the progression is :...

This is A.P. with common difference This is also A.P. and Required term = =-115 ...

The 20^{{th}{~}} term from the end of the progression 20,19\frac{1}{4},18\frac{1}{2},17\frac{3}{4},, - 129\frac{1}{4} is :: Sequence & Series (Mathematics)

The

20^{\text{th}\text{~}}

term from the end of the progression

20,19\frac{1}{4},18\frac{1}{2},17\frac{3}{4},\ldots, - 129\frac{1}{4}

is :