All problems are available on the Art of Problem Solving website at https://artofproblemsolving.com/community/c596121_2018_cca_math_bonanza.
*These are the rankings as announced at the competition. There were errors in the answer key which may have affected the standings. Since we do not have all of the tests anymore, we cannot fix these errors. We apologize for the possibly inaccurate results.
The top 10 individuals (as announced at the competition) were (with ties broken by the Tiebreaker Round):
| Place | Team | Name | Score |
| 1 | Torrey Pines 1 | Kevin Ren | 14 |
| 2 | University 1 | Phil Chen | 12 |
| 3 | Francis Parker 1 | Jeremy McCulloch | 10 |
| 4 | University 1 | Anton Ni | 9 |
| 5 | Torrey Pines 2 | Sumith Nalabolu | 9 |
| 6 | University 1 | Michael Diao | 9 |
| 7 | Bishop’s 1 | Evan Ren | 9 |
| 8 | Westview 1 | Steven Zhang | 8 |
| 9 | Torrey Pines 1 | Jeff Ren | 8 |
| 10 | Westview 2 | Farnood Ensan | 8 |
Honorable mention: James Ni of Westview 2 and Vivek Alumootil of CVMS 1 (8).
The top 5 teams were
| Place | Team | Total | Indv Total (out of 60) | Team Round (50) | Lightning Round (40) |
| 1 | Torrey Pines 1 | 92.25 | 33 | 35 | 24.25 |
| 2 | University 1 | 91.55 | 36 | 30 | 25.55 |
| 3 | Torrey Pines 2 | 83.50 | 29 | 35 | 19.50 |
| 4 | Bishop’s 1 | 68.96 | 29 | 20 | 19.96 |
| 5 | CVMS 1 | 66.46 | 23 | 25 | 18.46 |
The top Coordination score was 1.67, shared by Francis Parker 1 and Sage Creek 1 for putting 5.
The score distribution for the Individual Round was:
| Score | Frequency |
| 15 | 0 |
| 14 | 1 |
| 13 | 0 |
| 12 | 1 |
| 11 | 0 |
| 10 | 1 |
| 9 | 4 |
| 8 | 5 |
| 7 | 10 |
| 6 | 12 |
| 5 | 5 |
| 4 | 8 |
| 3 | 6 |
| 2 | 9 |
| 1 | 14 |
The average score on the Individual Round was a 4.35. The median was a 4.
In histogram form:
Problem difficulty for the Individual Round was as follows:
| Problem | Number Solved | Solve Percentage |
| 1 | 50 | 60.24% |
| 2 | 45 | 54.22% |
| 3 | 56 | 67.47% |
| 4 | 34 | 40.96% |
| 5 | 66 | 79.52% |
| 6 | 29 | 34.94% |
| 7 | 24 | 28.92% |
| 8 | 9 | 10.84% |
| 9 | 7 | 8.43% |
| 10 | 5 | 6.02% |
| 11 | 25 | 30.12% |
| 12 | 6 | 7.23% |
| 13 | 3 | 3.61% |
| 14 | 2 | 2.41% |
| 15 | 0 | 0.00% |
Score distribution for the Team Round was:
| Score | Frequency |
| 10 | 0 |
| 9 | 0 |
| 8 | 0 |
| 7 | 2 |
| 6 | 1 |
| 5 | 3 |
| 4 | 9 |
| 3 | 3 |
| 2 | 3 |
| 1 | 1 |
| 0 | 0 |
The average score on the Team Round was a 3.95. The median was a 4.
Problem difficulty on the Team Round was as follows:
| Problem | Number Solved |
Solve Percentage
|
| 1 | 20 | 90.91% |
| 2 | 21 | 95.45% |
| 3 | 10 | 45.45% |
| 4 | 14 | 63.64% |
| 5 | 8 | 36.36% |
| 6 | 11 | 50.00% |
| 7 | 1 | 4.55% |
| 8 | 0 | 0.00% |
| 9 | 1 | 4.55% |
| 10 | 1 | 4.55% |
CCA Math Team 