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| Q.13 | In a class, there are 70 students and their average mark in the annual examination is 35. If the average marks of passed students is 60 and the average marks of failed students is 25, then find the number of students who failed. | |
| Ans | A. 70 | |
| B. 60 | ||
| C. 50 | ||
| D. 40 |
Correct Ans Provided: C
