Question

if 'l' is the last term of an arithmetic progresson with common difference 'd' then nth term from end is____

• A. l-(n+1)d
• B. l-(n-1)d
• C. l-(n-2)d
• D. l-(n+2)d

Answer 1

The correct option is B l-(n-1)d

Here, $\ell$ is the last term of an AP

with common difference d.

if we find $n^{\text{th}}$ term from end,

then $l$ is the first term and

common difference $=-d$

$\begin{array}{cc}{T}_n& =l+(n-1)(-d)(T_n=a+(n-1\left)\alpha \right)\\ & =l-(n-1)d\end{array}$