Question

When two dice are rolled find the probability of at least one die is a 3?

Answer 1

Favourable cases are (1,3),(2,3),(3,1),(3,2),(3,3),(3,4),(3,5),(3,6),(4,3),(5,3),(6,3)=> 11 favourable cases out of 6×6 =36. So probability that atleast one dice is 3 when two dices are rolled is 11/36.