 Hi, and welcome to the session. Let's discuss the following question. The question says write the first five terms of each of the sequences in exercises 1 to 6, whose n-th terms are, fifth part is a n is equal to minus 1 to the power n minus 1 into 5 to the power n plus 1. Let's now begin with the solution. Given n-th term is a n is equal to minus 1 to the power n minus 1 into 5 to the power n plus 1. Since we need to find the first five terms, therefore we will put n as 1, 2, 3, 4 and 5. By substituting n as 1, in this expression we get a1 is equal to minus 1 to the power 1 minus 1 into 5 to the power 1 plus 1. Now this is equal to minus 1 to the power 0 into 5 to the power 2, minus 1 to the power 0 is 1. So this is equal to 1 into 25 and 1 into 25 is equal to 25. By substituting n as 2, in this expression we get a2 is equal to minus 1 to the power 2 minus 1 into 5 to the power 2 plus 1. This is equal to minus 1 raised to the power 1 into 5 to the power 3 minus 1 to the power 1 is minus 1 into 5 to the power 3 is 125. So this is equal to minus 125. By substituting n as 3, we get a3 is equal to minus 1 to the power 3 minus 1 into 5 to the power 3 plus 1. This is equal to minus 1 to the power 2 into 5 to the power 4 and this is equal to 1 into 5 to the power 4 is equal to 625. So this is equal to 625. By substituting n as 4, we get a4 is equal to minus 1 to the power 4 minus 1 into 5 to the power 4 plus 1 and this is equal to minus 1 to the power 3 into 5 to the power 5 minus 1 to the power 3 is equal to minus 1. So we have minus 1 into 5 to the power 5 is equal to 3125. So this is equal to minus 3125. By substituting n as 5, we get a5 is equal to minus 1 to the power 5 minus 1 into 5 to the power 5 plus 1. And this is equal to minus 1 to the power 4 into 5 to the power 6 minus 1 to the power 4 is equal to 1 and 5 to the power 6 is equal to 15625. And this is equal to 15625. Hence, the required terms are 25 minus 125, 625 minus 3125 and 15625. This is our required answer. So this completes the session. Bye and take care.