Statement 1: If `p ,q ,ltr ,` the number of different selections of `p+q` things taking `r` at a time, where `p` thingks are identical and `q` other things are identical, is `p+q-r+1.` Statement 2: If `p ,q ,>r ,` the number of different selections of `p+q` things taking `r` at a time, where `p` thingks are identical and `q` other things are identical, is `r-1.`