A : no. on 1st die < no. on 2nd die A: no. on 1st die = even & no. of 2nd die = odd C: no. on 1st die = odd & no. on 2nd die = even n(A)=5+4+3+2+1=15 n(B)=9 n(C)=9 n((A∪B)∩C)=(A∩C)∪(B∩C) =(3+2+1)+0=6.