Q. 10. What is the median class for the following grouped data?
| Class | Frequency |
| 128 – 135 | 8 |
| 135 – 142 | 5 |
| 142 – 149 | 9 |
| 149 - 156 | 12 |
| 156 – 163 | 5 |
| 163 – 170 | 1 |
Sol .
| Class | Freq.(f) | c.f. |
| 128 - 135 | 8 | 8 |
| 135 - 142 | 5 | 13 |
| 142 - 149 | 9 | 22 |
| 149 - 156 | 12 | 34 |
| 156 - 163 | 5 | 39 |
| 163 – 170 | 1 | 40 |
SECTION B
Question numbers 11 to 15 carry 2 marks each.
Q. 11. Find the zeroes of the quadratic polynomial. 
Sol. 
| Mathematics 2008 Question Papers Class X | |||||||
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