Write a complete MATLAB program to input the first (X) number of series, and then: 1. Add the next 70th numbers; 2. Calculate the average value

I don't understand the question and even internet doesn't help me either.

I want to solve the question

[Jan]

This sound like a homework question. As usual: Please post, what you have tried so far and ask a specific question.

[noor almasry]

Yes, can you solve it?

[Steven Lord]

This sounds like a homework assignment. If it is, show us the code you've written to try to solve the problem and ask a specific question about where you're having difficulty and we may be able to provide some guidance.

If you aren't sure where to start because you're not familiar with how to write MATLAB code, I suggest you start with the MATLAB Onramp tutorial (https://www.mathworks.com/support/learn-with-matlab-tutorials.html) to quickly learn the essentials of MATLAB.

If you aren't sure where to start because you're not familiar with the mathematics you'll need to solve the problem, I recommend asking your professor and/or teaching assistant for help.

[noor almasry]

I don't understand the question and even internet doesn't help me either.

[Rik]

If you don't understand the question itself, ask your teacher for clarification. That is the advice Steven already gave you, and I can only agree.

[Jan]

Even the 1st sentence is mysterious: "Write a complete MATLAB program to input the first (X) number of series". What are "incomplete" programs? Does "the first (X) number" mean a specific number of elements of a specefic series? How could a program determine the following 70 (!!!) elements? There is no unique way to expand a given list of numbers. So appending 19 is a good choice. The average number of what?

This question is not meanigful. The internet cannot help to solve an unclear question, because this would require a portion of magic.