Number of crystal systems having, only 2 types of Bravais lattices = x, Number of crystal systems having, at least 2 interfacial angles equal = y, All the three interfacial angles and all the three axes lengths equal = z Then find `y -(x +z)`.

Number of crystal systems having only 2 types of bravais lattices = x, number of crystal system having at least two interfacial angles equal = y and number of crystal systems having all the three edge lengths equal = z. Then find the value of x xx y xx z.

Number of crystal systems having only 2 types of bravais lattices = x, number of crystal system having at least two interfacial angles equal = y and number of crystal systems having all the three edge lengths equal = z. Then find the value of x xx y xx z.

Which of the crystal systems has all the axial angles equal but not equal to 90^(@) ?

Which of the crystal systems have all the axial distances (or edge lengths )equal?

Name the crystal system in which all the three axes are of equal length which are inclined at the same angle but the angle is not equal to 90^@ ,

If all three interfacial angels defining the unit cell, are equal in magnitude, the crystal cannot be:

which of the following crystal structrues have length of all the crystallographic axis different and have at least one angle equal to 90^(@) ?

If the three interaxial angles defining the unit cell are all equal in magnitude, the crystal cannot belong to the