Exercise 5.2

Fill in the blanks in the following table, given that $a\mathrm{}$ is the first term, $d\mathrm{}$ the common difference and $a_n\mathrm{}$the $n\mathrm{t}\mathrm{h}$ term of the $\mathrm{A}\mathrm{P}$

${30}^{\mathrm{th}}$ term of the $\mathrm{A}.\mathrm{P}: 10, 7, 4, ...,$ is

Choose the correct choice in the following and justify:
 $11$th term of the AP $:-3, -\frac{1}{2}, 2, \dots$ is

In the following $\mathrm{A}\mathrm{P}$, find the missing terms in the blanks.

_____, $13$, _____, $3$
 

In the following $\mathrm{A}\mathrm{P}$, find the missing terms in the blanks.

$5,$ _____, _____, $9\frac{1}{2}$

In the following $\mathrm{A}\mathrm{P}$, find the missing terms in the blanks given below.

 $–4$, _____, _____, _____, _____, $6$
 

In the following $\mathrm{A}\mathrm{P}\mathrm{s}$, find the missing terms in the boxes.

$\square , 38, \square , \square , \square , –22$

Find the number of terms in the following $\mathrm{A}\mathrm{P}$.
$18, 15\frac{1}{2}, 13,....,-47$