Question

Find sum of 25 terms of ap whose n™ term is 3+2n

Answer 1

Answer:

nth term is 3+2n

then putting n=1 we get 3+2=5

now putting n =2 we get 3+4 = 7

now there fore common difference will be 7-5 =2

now finding 25th term

a+(n-1)d

5+(25-1)×2

5+24×2

5+48

53

hence the 25th term is 53...

i hope it helps u

Answer 2

Answer:

63

Step-by-step explanation:

5,7,9,.......

a=5 , n=25,d=2

t25= a+(n-1)d

= 5+(25-1)2

= 5+ 48

=63