Question

6 The sum of the first
n even naturel
numbes
Ah​

Answer 1

$\huge\boxed{\underline{\sf{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\pink{R}}}}$

We know, Sum formula

$su = \frac{n}{2} {a + 1}$

a= First term

n= number of term

an=nth term

l= last term

Given sum =2+4+6+8+....2n

$= \frac{n}{2} 2 + 2n = n ( n + 1)$