The sum of the series 5 + 9 + 13 + 17 + .... + 45 Is
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1+4=5.
5+4=9
9+4=13
13+4=17
17+4=21
thanks mark as BRAINLY
5+4=9
9+4=13
13+4=17
17+4=21
thanks mark as BRAINLY
Answered by
0
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.
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