Question

40 puncte si coroanaa!!!!!!!!!!!! Se arunca doua zaruri colorate diferit. Se cere probabilitatea ca produsul punctelor obtinute sa fie: a) nr. prim b) patrat perfect c) divizibil cu 3 d) par

Answer 1

a) 1 * 1 = 1
1 * 2 = 2
1 * 3 = 3
1 * 5 = 5
b) 1*4 = 4
2 * 2 = 4
3 * 3 = 9
4 * 4 = 16
5 * 5 = 25
6 * 6 = 36
1 * 1 = 1
c) 1 * 3 = 3
2 * 3 = 6
3 * 3 = 9
3 * 4 = 12
3 * 5 = 15
 3 * 6 = 18
d) 1 * 2 = 2
1 * 4 = 4
1 * 6 = 6
2 * 2 = 4
 2 * 3 = 6
 2 * 4 = 8
 2 * 5 = 10
2 * 6 = 12
3 * 6 = 18
3 * 4 = 12
4 * 4 = 16
4 * 5 = 20
4 * 6 = 24
5 * 6 = 30
6 * 6 = 36