Question

Find the nth term of this number sequence

Answer 1

Answer:

2

Step-by-step explanation:

We can tell that the pattern is in a decreasing even no. order. So, the no.s are in this following.

18, 16, 14, 12, 10, 8, 6, 4, 2

Answer 2

So we see that the first term is 18 and the second is 16. It goes down by 2 each time. The 'zeroth' term is 2 more than the first one.
So, the nth term is (-2n+20).
Test:
When n=4
-2*4+20=12. This is right because the fourth number is 12, as we see.