You have an equation .
Ask yourself: Do you want d to be 2, or 4, or 23, or 46 ? Which? After you choose, solve for a value of n that corresponds.
Notice, your question specifies FIVE terms. THAT is what controls what you do. You first are given a way to choose n.
- .
You must start with which gives your factor of 4.
NOW evaluate for common difference, d.