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प्रश्न
In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.
| 8 | 1 | 3 | 7 | 6 | 5 | 5 | 4 | 4 | 2 |
| 4 | 9 | 5 | 3 | 7 | 1 | 6 | 5 | 2 | 7 |
| 7 | 3 | 8 | 4 | 2 | 8 | 9 | 5 | 8 | 6 |
| 7 | 4 | 5 | 6 | 9 | 6 | 4 | 4 | 6 | 6 |
How many students obtained marks below 4?
योग
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उत्तर
| Marks | Tally Marks | Number of Students |
| 1 | || | 2 |
| 2 | ||| | 3 |
| 3 | ||| | 3 |
| 4 | `\cancel(||||)` || | 7 |
| 5 | `\cancel(||||)` | | 6 |
| 6 | `\cancel(||||)` || | 7 |
| 7 | `\cancel(||||)` | 5 |
| 8 | |||| | 4 |
| 9 | ||| | 3 |
The students who got marks below 4 are the students who got marks as either 1, 2 or 3 marks.
Therefore, the number of these students
= 2 + 3 + 3
= 8
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