Question

sum of the first n terms of the even natural number is​

Answer 1

Answer:n(n+1)/2

Where n is the natural no

Step-by-step explanation:

Answer 2

Answer:

n(n+1)

Step-by-step explanation:

2+4+6+8+......+n

general term will be 2n

summation of 2n

[n(n+1)/2]x2