Question

solve this question mate plzzzz ​

Answer 1

$\Large\bf{\color{lime}Answer :- }$

$a = 4 \\ \\ d = 7$

$then$

$s51 = \frac{n}{2} (2a + (n - 1)d)$

$= \frac{51}{2} (2(4) + (51 - 1)(7))$

$= \frac{51}{2} (8 + (50)(7))$

$= \frac{51}{2} (8 + 350)$

$= \frac{51}{2} (358)$

$= 51(159)$

$= 8109$

$hence \: sum \: of \: 51 \: terms \: is \: 8109.$

Answer 2

ye dua h Meri raab se innh writing Mai sbse Meri writing smajh aaye(≧▽≦)

. hehehehe