To figure out the position of the number 87 in the pattern with the rule 201 - 3n, we need to set up an equation and solve for n.
The rule 201 - 3n represents the terms in the pattern. Let's set 201 - 3n equal to 87 (which is the number we want to find the position of in the pattern):
201 - 3n = 87
Now, solve for n:
201 - 3n = 87
-3n = 87 - 201
-3n = -114
n = \frac{-114}{-3}
n = 38
So, the position of the number 87 in the pattern is 38.
\boxed{n = 38}