Use the symmetry of the circle and reference arcs as needed to state the exact value of . A diagram may help.

Question

Use the symmetry of the circle and reference arcs as needed to state the exact value of  . A diagram may help.

Quizplus · Accepted Answer

By noting that the given hexadecimal number is in the form of a mirror image, one can identify that values on the left and right sides of the underscore must match. Similarly, the values in positions 3 and 9 must also match because of the symmetry of the circle. Using this information, we can eliminate answer choices (A) and (D). 
Next, we know that two vertically aligned points on the circle must be symmetric over a horizontal line through the center. Therefore, we can reason that the value in position 4 must be the complement of the value in position 10. 
Using this logic, we find that the only answer choice that satisfies all these conditions is (B): 11ea7f29_4fe9_cb0b_9ecd_eb003baee7b7_TB3307_11.

Use the Symmetry of the Circle and Reference Arcs as Needed