Question

Find the indicated terms in the sequence, whose $n^{th}$ term is: $a_n=4n-3;a_{17},a_{24}$.

Answer 1

Finding $a_{17}$ and $a_{24}$ terms of sequence.
Given, $a_n=4n-3$
Substituting $n=17$ in $a_n$, we get
$a_{17}=4\times 17-3$
$\Rightarrow a_{17}=68-3=65$

Now, put $n=24$ in $a_n$, we get
$a_{24}=4\times 24-3$
$\Rightarrow a_{24}=96-3=93$

Hence, the values of $a_{17}$ and $a_{24}$ terms are $65$ and $93$ respectively.