A student taking a test consisting of 10 questions is told that each question after the first question is worth 2 marks more than the preceding questions. If third question of the test worth 5 marks , what is the maximum score that the student can obtain by attempting 8 questions.
The answer is 96 marks. I want explanation.
Dear student
The maximum marks can be scored by obtaining full marks from 3rd to 10th questions.
Here, a = 5, d = 2, n = 8
[Marks to 3rd question = 5, 10th question is 8th term when first term is 3rd question]
So, maximum mark that the student can obtain is 96.
Regards
So, maximum mark that the student can obtain is 96.
Regards