Question

In an Arithmetic progression an=5n+2, then 1st

term is​

Answer 1

      $\underline{\bold{Answer:}}$

      $7$

      $\underline{\bold{Step-by-step-explaination:}}$

       $\text{It is given that the }n^{th} \text{ term of the A.P is }a_n = 5n + 2$

       $\text{We have to find the }1^{st} \text{ term of the A.P}$

$\implies \text{We have to find }a_1$

       $\text{Putting }n = 1 \text{ in }a_n = 5n + 2$

$\implies a_1 = 5(1) + 2$

$\implies a_1 = 5 + 2 = 7$

 $\therefore \text{ }\text{ The first term of the A.P is }7$

Answer 2

93

(given) <br>

<br> Thus, we have <br> (i) first term = 3. <br> (ii) common difference

<br> (iii) 19th term = a +(19-1) d, where a = 3 and d = 5. <br>