Question

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Look at the following rules for two number patterns. Both patterns start with 40.
the patterns are
Pattern P: "Subtract 2"
Pattern Q: "Subtract 4"
the answers are: Excluding the first term, a term in Pattern P is always 2 greater than its corresponding term in Pattern Q.
Excluding the first term, a term in Pattern Q is always 4 greater than its corresponding term in Pattern P.
Starting with 0, the difference in the corresponding terms in the two patterns decreases by 4.
Starting with 0, the difference in the corresponding terms in the two patterns increases by 2.

Answer 1

Pattern P:

40, 38, 36, 34, 32, 30, …

Pattern Q:

40, 36, 32, 28, 24, 20, …

(absolute) Differences in corresponding terms:

0, 2, 4, 6, 8, 10, …

and these differences agree with the last statement.