Find the nth term of this number sequence
18, 16, 14,
someone pls me and tell me the answer

The nth term of this number sequence 18, 16, 14, 12,... will be -2n + 20.

First term = 18

Second term = 16

Common difference = 16 - 18 = -2

It should be noted that the formula for finding the next term of an arithmetic sequence will be:

= a + (n - 1)d

= 18 + (n - 1) × -2

= 18 - 2n + 2

= -2n + 20

Therefore, the nth term of this number sequence 18, 16, 14, 12,... will be -2n + 20.

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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.

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