Question

The sum of the series 5 + 9 + 13 + 17 + .... + 45 Is

Answer 1

1+4=5.
5+4=9
9+4=13
13+4=17
17+4=21
thanks mark as BRAINLY

Answer 2

Answer: 275

Step-by-step explanation:5+9+13+17+.....+45

here d=4

we can find no. of terms by:

tn=a +(n-1)d

45 = 5+(n-1)4

n=11

Sum(Sn)=n/2(a+l) where lis last term

Thus, by solving Sn is 275.