Mark and name the following on the outline map of the world with suitable index:
An industrial region in South Africa - Kimberley.
| List-I: Basis | List-II: Industry Type |
|---|---|
| (A) Ownership | (III) Private sector |
| (B) Capital investment | (IV) Cottage industry |
| (C) Use of their products | (I) Consumer goods |
| (D) Raw materials used by them | (II) Mineral based |
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?