Question

what is the the sum of even numbers from 1 to 350​

Answer 1

Answer:

30800

Step-by-step explanation:

Using formulas

An = a +(n-1)d

Sn = n/2 (2a + (n-1)d)

here,

d=2 , a = 2, an = 350

350 =  2 + (n-1)2

n = 175

Sn = 175/2 (4 +(174)2)

=30800