The runs scored by two teams A and B on the first 42 balls in a cricket match are given below:
| No. of balls | 1-6 | 7-12 | 13-18 | 19-24 | 25-30 | 31-36 | 37-42 |
| Runs scored by Team A | 2 | 1 | 8 | 9 | 4 | 5 | 6 |
| Runs scored by Team B | 5 | 6 | 2 | 10 | 5 | 6 | 3 |
Solution:
| No. of balls | Class marks | Team A | Team B |
| 1-6 | 3.5 | 2 | 5 |
| 7-12 | 9.5 | 1 | 6 |
| 13-18 | 15.5 | 8 | 2 |
| 19-24 | 21.5 | 9 | 10 |
| 25-30 | 27.5 | 4 | 5 |
| 31-36 | 33.5 | 5 | 6 |
| 37-42 | 39.5 | 6 | 3 |
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