Question

you roll a fair dice
work out the probability of rolling
a) 3
b) an even no
c) a 3 or an even number

Answer 1

Answer:

Probability ;

a ) 1 / 6

b ) 1 / 2

c ) 2 / 3

Step-by-step explanation:

a) No. of favourable outcomes to get 3 = 1

No. of outcomes = 1, 2, 3, 4, 5, 6 = 6

Probability

= No.of favourable outcomes / Total Outcomes

1 / 6

b) Even number

No of favourable outcomes = 2,4,6

= 3

Total number of outcomes = 6

Probability = 3 / 6

= 1/2

c) 3 / an Even number

Favourable outcomes = 3 , 2 ,4 , 6

= 4

Total Outcomes in dice = 6

Probability = 4 / 6

= 2 / 3