Question

A rule was used to make the pattern shown below. 51, 45, 39, 33, 27, 21 .... Which could be the rule used to make the pattern? A Divide by 7. Divide by 6. Subtract 7. Subtract 6. B C Section 2: Quantitative Reasoning PETA​

Answer 1

subtract 6

Explanation:

the pattern is made by subtracting 6 from the previous number

Answer 2

subtract 6

Explanation:

note there is a common difference between consecutive terms, that is

45 - 51 = - 6

39 - 45 = - 6

33 - 39 = - 6

27 - 33 = - 6

21 - 27 = - 6

the rule being used to make the pattern is subtract 6

this is an arithmetic sequence for which an nth term rule can be found