The first term of the sequence is $20$, and each term is obtained by subtracting 6 from the previous term.

Let's calculate up to the 3rd term:

• 1st term: $20$
• 2nd term: $20 - 6 = 14$
• 3rd term: $14 - 6 = 8$

Thus, the 3rd term is $8$.

Would you like further details or have any questions?

Here are 5 related questions to consider:

1. What would be the 5th term in this sequence?
2. How can you express the $n$-th term of this sequence algebraically?
3. What type of sequence is this, and how do you classify it?
4. What happens to the sequence if the rule changes to $-4$ instead of $-6$?
5. What is the sum of the first 3 terms of this sequence?

Tip: For sequences where the rule involves subtraction, the common difference is negative, leading to a decreasing arithmetic sequence.