6. 

Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?

A.
1
2
B.
3
4
C.
3
8
D.
5
16

7. 

In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:

A.
21
46
B.
25
117
C.
1
50
D.
3
25

8. 

In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

A.
1
10
B.
2
5
C.
2
7
D.
5
7

9. 

From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?

A.
1
15
B.
25
57
C.
35
256
D.
1
221

10. 

Two dice are tossed. The probability that the total score is a prime number is:

A.
1
6
B.
5
12
C.
1
2
D.
7
9