Question

the n term of an ap is 5n-2 find (1)the Ap (2) 61st term of ap (3) sum of first 25 terms of ap​

Answer 1

Answer:

Step-by-step explanation:

an = 5n-2

a1 = 5(1) - 2=3

a2 = 5(2) - 2=8

a3 = 5(3)-2 = 13

d = a2-a1=8-3=5

(1)AP=3,8,13

(2) a63 = a+(n-1)d

             = 3+63*5

  a63           =318

(3) s25 = n(2a+(n-1)d)/2

         25(6+24*5)/2

        25(126)/2

         1575