| List- I (Plays) | List- II (Play Wrights) | ||
| A. | A Doll's House | I. | Samuel Beckett |
| B. | The Cherry Orchad | II. | Henrik Ibsen |
| C. | Waiting for Godot | III. | Harold Pinter |
| D. | The Room | IV. | Anton Pavlov Chekhov |
Fill in the blank with the correct option.
The teacher believed that the student’s sudden lack of interest in class was an ..........., as he had always been enthusiastic and attentive.
What comes next in the series?
\(2, 6, 12, 20, 30, \ ?\)