 Hi and welcome to the session. I am Asha and I am going to help you with the following question that says Find the 28th term of the series 2 into 4 plus 4 into 6 plus 6 into 8 plus so on to n terms Now let us start with the solution and let us denote the sum where s which is 2 into 4 plus 4 into 6 plus 2 n terms Now the nth term of the series will be 2n into, first let us replace n by 1 so it can be written as 2 into 1 into 2 into 1 plus 2 The second term can be written as 2 into 2 into 2 into 2 into 2 plus 2 So the nth term can be written as 2 into n into 2n plus 2 or it can further be written as 2n into 2 times n plus 1 which is equal to 4 n into n plus 1 so this is the nth term and we have to find the 20th term So replacing n by 20 we have 4 into 20 into 20 plus 1 which is equal to 4 into 20 into 21 or 4 into 20 is 80 into 21 which is equal to 1680 therefore the 20th term is equal to 1680 This completes the session, take care and have a good day