If the $2^{\text{nd}}$ term of an $AP$ is $13$ and the $5^{\text{th}}$ term is $25$,what is its $7^{\text{th}}$ term?

Which of the following is an $A.P.$?

Find the sum of the first $25$ terms of the $A.P.$ $30, 26, 22, \ldots$

The $7^{th}$ and $12^{th}$ terms of an $A.P.$ are $46$ and $71$ respectively. Find the $n^{th}$ term of the $A.P.$

The students of a school decided to beautify the school on the Annual Day by fixing colourful flags on the straight passage of the school. They have $27$ flags to be fixed at intervals of every $2 \,m$. The flags are stored at the position of the middle-most flag. Ruchi was given the responsibility of placing the flags. Ruchi kept her books where the flags were stored. She could carry only one flag at a time. How much total distance did she cover in completing this job and returning back to collect her books? What is the maximum distance she travelled carrying a flag? (in $m$)

Find the sum of the first $20$ terms of the $A.P.$ $50, 46, 42, \ldots$