Ans: There are a total of 20 questions in this particular exercise. Question 1 and question 2 consists of 4 and 3 sub-questions and in all the questions we have to find the sum of APs. In question 3, you’ll have to find the nth term or the mentioned terms. In question 4, you’ll have to check how many terms are there in the given sum, Question 5, 6, 7, 8 and 9 are similar types of questions. In which, you’ll have to find the first n terms.
Questions 10 and 11 ask you to find a1, a2... Till the first 15 terms. In question 12, 13 and 14 you have to find the sum of odd numbers between the given numbers. Question 15, 16, 17, 18, 19 and 20 are scenario-based questions. In which, you have to solve the questions based on the given scenario.