In the following $APs,$ find the missing term in the box: $2, \square, 26$

In an $AP$ given $a=7$ and $a_{13}=35$,find $d$ and $S_{13}$.

Do $4, 10, 16, 22, \ldots$ form an $AP$? If they form an $AP,$ write the next two terms.

Write the first four terms of the $AP,$ when the first term $a$ and the common difference $d$ are given as follows: $a = -1.25, d = -0.25.$

In which of the following situations,does the list of numbers involved make an arithmetic progression,and why? The amount of money in the account every year,when ₹ $10000$ is deposited at compound interest at $8 \%$ per annum.

How many three-digit numbers are divisible by $7$?