LIST I | LIST II | ||
| A | Controlling TV channels through remote | I | Circuit switching |
| B | Moving elevators up/down | II | Simplex communication |
| C | Communication between two computers | III | Half-duplex communication |
| D | Communication through telephone call | IV | Full-duplex communication |
Column-I has statements made by Shanthala; and, Column-II has responses given by Kanishk.

What comes next in the series?
\(2, 6, 12, 20, 30, \ ?\)
In a sequence of numbers, each term is generated by multiplying the previous term by 2 and then subtracting 1. If the first term is 3, what is the fourth term in the sequence?
The following data shows the number of students in different streams in a school: 
Which type of graph is best suited to represent this data?