Question

The ${12}^{th}$ term of an A.P is $36$ find the $5^{th}$ term is if $d=-2$

Answer 1

Given: $a_{12}=36$ and $d=-2$

$a_{12}=a+11d=36$
$a+11(-2)=36$
$a=36+22=58$
$a_5=58+4(-2)=50$