Which of the following statements is false?

1. Every equilateral triangle is an isosceles triangle.

2. Every isosceles triangle is an equilateral triangle.

3. Every parallelogram is a trapezium.

4. Every trapezium is a quadrilateral.

Which of the following statements is correct?

1. Every rhombus is a square.

2. Every parallelogram is a rectangle.

3. Every square is a rhombus.

4. Every rectangle is a square.

If a solid shape is completely bounded by plane faces, then the least number of faces it may have is

1. 3

2. 4

3. 5

4. 6