(i){1,2,3,6}(a){x:xisaprimenumberandadivisorof6}(ii){2,3}(b){x:xisanoddnaturalnumberlessthan10}(iii){M,A,T,H,E,I,C,S}(c){x:xisnaturalnumberanddivisorof6}(iv){1,3,5,7,9}(d){x:xisaletterofthewordMATHEMATICS}
(A)(i)−c,(ii)−a,(iii)−d,(iv)−b(B)(i)−a,(ii)−c,(iii)−b,(iv)−d(C)(i)−b,(ii)−a,(iii)−d,(iv)−c(D)(i)−c,(ii)−d,(iii)−a,(iv)−b