Question 4
Find the missing numbers.
**Editorial note for this self-study exercise:** Use the source rule: each outer number is the sum of the two inner sectors immediately adjoining the opposite end of its spoke. This supplied rule fixes the intended pattern; the diagram alone need not determine a unique abstract rule. Enter the missing number.
**Editorial note for this self-study exercise:** Use the source rule: each outer number is the sum of the two inner sectors immediately adjoining the opposite end of its spoke. This supplied rule fixes the intended pattern; the diagram alone need not determine a unique abstract rule. Enter the missing number.