Question

2. Prove that the sum of first n even numbers
=n(n+1).​

Answer 1

Answer:

Step-by-step explanation:

Sum of first n even natural numbers = 2 + 4 + 6 + 8 + ................ + 2n

                                                             = 2 ( 1+2+3+4.........n)

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

HENCE PROVED