List-I | List-II | ||
| (A) | Calamine | (I) | CuFeS2 |
| (B) | Siderite | (II) | ZnCO3 |
| (C) | Sphalerite | (III) | ZnS |
| (D) | Copper pyrite | (IV) | FeCO3 |
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?