Question

question no 5 slove step by step kar na hai copy par Bana kar send karna ok

Answer 1

so answer is 310
a=-40 n=15. d=25

Answer 2

nth term = a+ (n-1) d
here, a = - 40, n = 15,  d= 25
15th term = - 40 + ( 15 - 1 ) 25
            = -40 + ( 14 ) 25
            = - 40 + 350
             = 310