Answer sheet
Counting & Probability set
20 problems · 60 minutes. Print this, do the paper, then type the answers in to have it scored and filed.
The marking key prints on its own sheet, after the answer sheet. Keep that page — it carries the correct answers and each problem's topic.
Counting & Probability set — answer sheetAMC 10 Step by Step
Name: Date: September 13, 2026
| 1 | ABCDE |
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Correct ____ × 6 = ______Blank ____ × 1.5 = ______Score ________
Counting & Probability set — marking keyAMC 10 Step by Step
Name: Date: September 13, 2026
Keep this sheet. The topic column says what to practise next, not just what was wrong.
Marking key
| # | Answer | Topic | Difficulty |
|---|---|---|---|
| 1 | D | Games & Processes | 2 / 5 |
| 2 | B | Inclusion-Exclusion | 3 / 5 |
| 3 | D | Expected Value | 3 / 5 |
| 4 | B | Distributions & Stars and Bars | 3 / 5 |
| 5 | D | Conditional Probability & States | 3 / 5 |
| 6 | C | Paths & Grids | 3 / 5 |
| 7 | A | Basic Counting | 3 / 5 |
| 8 | E | Basic Probability | 3 / 5 |
| 9 | D | Arrangements with Restrictions | 3 / 5 |
| 10 | D | Expected Value | 3 / 5 |
| 11 | A | Basic Counting | 4 / 5 |
| 12 | D | Conditional Probability & States | 4 / 5 |
| 13 | E | Games & Processes | 4 / 5 |
| 14 | A | Recursive Counting | 4 / 5 |
| 15 | C | Geometric Probability | 4 / 5 |
| 16 | D | Arrangements with Restrictions | 4 / 5 |
| 17 | B | Paths & Grids | 4 / 5 |
| 18 | B | Basic Probability | 4 / 5 |
| 19 | D | Inclusion-Exclusion | 4 / 5 |
| 20 | C | Geometric Probability | 4 / 5 |