Find the mean and mode of the following data:
| Class | 15--20 | 20--25 | 25--30 | 30--35 | 35--40 | 40--45 |
| Frequency | 12 | 10 | 15 | 11 | 7 | 5 |
In the past few years, the teaching-learning process has taken a leap and gone beyond the four walls of the classroom. Today, it has become possible to learn not just by sitting in a physical classroom, but from anywhere. Given below is a chart depicting the differences between E-learning and Classroom learning. Write an analytical paragraph in about 120 words, assessing the benefits and drawbacks of both, by selecting features that support your analysis. 