Particle at the corner of a unit cell is shared by how many unit cells?

Q. Assertion A particle present at the corner of face centered unit cell has 1/8 of its contribution of the unit cell Reason In any space lattice, the corner of the unit cell is always shared by the eight unit cells 1)A 2)B 3)C 4)D

Q. In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells? (1)2 (2) 4 (3)6 (4) 8

Q. A particle at body-centre of the unit cell is shared by how many other unit cells?

Q. An atom at the corner of a simple cubic unit cell is shared among how many unit cells?