Find the sum of all even numbers from 1 to 130.
Answers
Answered by
2
Answer:
from formula in class 10 book
Step-by-step explanation:
a = 2 d =2 an = 130
an = a+ (n -1)d
= 2 + (n-1)2
130 = 2 +2n -2
130/2 = n
n= 150
Sn = n/2 (2a +( n-1) d)
150/2 (2× 2 + 149 ×2)
75 × (302)
= 22650
mark me as brainliest
Similar questions