Test: Probability - Challenging

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Question 1:   There are 4 white and 8 black balls in the basket. What is the probability that a ball picked at random is of white colour?
1 2
1 3
4 6
1 4
Question 2:   One tile is picked from a domino set. What is the probability that the picked tile will have a sum of dots equal to 5 ?
1 5
5 28
1 28
3 28
Question 3:   There are 15 balls in the box, numbered from 1 to 15 . One ball is picked at random from the box. What is the probability that the number of the picked ball is less than 8 ?
8 15
1 15
7 8
7 15
Question 4:   A girl picks one natural number from 1 to 20 . What is the probability that the number is a factor of 20 ?
3 20
1 20
3 10
1 10
Question 5:   What is the probability of getting an odd number when a fair dice is thrown?
1 3
1 2
1 6
2 3
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