SOLUTION: A number is selected at random, from the set {1,2,3,4,5,6,7,8,9,10} Find: P(odd and prime) In other words: The probability of an odd number and a prime number I know this is a

Algebra ->  Probability-and-statistics -> SOLUTION: A number is selected at random, from the set {1,2,3,4,5,6,7,8,9,10} Find: P(odd and prime) In other words: The probability of an odd number and a prime number I know this is a      Log On


   

Question 928697: A number is selected at random, from the set {1,2,3,4,5,6,7,8,9,10}
Find: P(odd and prime)
In other words: The probability of an odd number and a prime number
I know this is a type of multiplication problem and that the events are not independent because they over-lap.
I know the formula is P(A and B)= P(A)x P(B|A)
I just need help understanding what to plug into the equation.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
10 Numbers: 1,2,3,4,5,6,7,8,9,10
Prime and Odd: 1,3,5,7
choose one
P(Odd and Prime) = 4/10 = 2/5