The total number of Bravais lattice arrangements in different crystal systems is

What is the total number of Bravais lattices in the orthorhombic crystal system?

Which type of unit cell from the following is common to all seven types of crystal systems?

How many types of Bravais lattices are there?

In a face-centred cubic $(FCC)$ unit cell,the edge length $(a)$ in terms of atomic radius $(r)$ is:

The parameters of the unit cell of a substance are $a=2.5, b=3.0, c=4.0, \alpha=90^{\circ}, \beta=120^{\circ}, \gamma=90^{\circ}$. The crystal system of the substance is :