what is the sum of first n odd natural number starting from 11 (a) n2+10n (b) n2-10n (c) 10n-n2 (d) n2
Answers
Answered by
1
Answer : (a) n² + 10n
- sum of n odd natural numbers starting from 11
- sum of odd natural numbers starting from 1
- n²
- general formula of odd numbers = 2n - 1
On starting from 11 ,
- 1st term = 11
- difference = 2
- algebraic formula = 2n + (11-2)
- algebraic formula = 2n + 9
Sum of terms ,
ie , Sum of n odd terms starting
from 11 is n² + 10n
Answered by
0
n² + 10 n i think so
Please mark me as Brainliest
Similar questions