In a group of 5 people, what is the probability they were all born in different months

The probability that they were born in different months is

Step-by-step explanation:

Total number of ways = 12

Number of ways of the first person = 12

So, probability for the first person is

Now, the number of ways for the second person = 11

So, the probability for him =

Similarly, the probabilities for third, fourth and fifth persons are:

Hence, the total number of ways =

the least common denominator is 40

.24

step-by-step explanation:

the probability is   .24

the first player had the highest probability of getting a silver marble

the game could be made fair by adding back the marble that was drawn after each draw