Embibe Experts Solutions for Chapter: Arithmetic Progressions, Exercise 1: Exercise

The $9^{\mathrm{th}}$ term of an A.P. is $449$and ${449}^{\mathrm{th}}$ term is $9$. The term which is equal to zero is

The $n^{\mathrm{th}}$ term of the A.P. with first term $a$ and common difference $d$ is given by

The sum of the $2^{\text{nd }}$ term and the $7^{\text{th }}$ term of an A.P. is $30 .$ If its ${15}^{\text{th }}$term is $1$ less than twice of its $8^{\text{th }}$ term, find the A.P.

If the sum of $n$ terms of an A.P. be $3n^2+n$ and its common difference is $6$, then its first term is

The first and last terms of an A.P. are $1$ and $11$. If the sum of its terms is $36$, then the number of terms will be

The sum of first $16$ terms of the $\mathrm{A}.\mathrm{P}., 10, 6, 2,....$is

In an $\mathrm{AP}$, if $a=1$, $a_n=20$ and $S_n=399$, then $n$ is equal to 

The sum of first seven terms of an A.P. is $182$. If its $4^{th}$ and the ${17}^{th}$ terms are in the ratio $1:5$, find the A.P.