Hybridization?

For each of the following types of hybridization, identify the types (s,p,or d) of atomic orbitals and indicate how many atomic orbitals of each type are mixed to give each of the following sets of hybridized atomic orbitals: sp2 (triangular), dsp3 (trigonal bipyramidal), d2sp3 (octahedral). Also tell how many hybridized orbitals are formed in each case.