Question

find the sum upto n terms of 2+4+6+ _ _ _ _ to n terms​

Answer 1

Answer:

If n is not defined then answer is 12+ infinity

Answer 2

Step-by-step explanation:

given series is a sum of multiples of 2, so

2(1+2+3+4+....to n terms)

sum of n natural numbers = n(n+1)/2

2(n(n+1)/2)=n(n+1)