SOLUTION: An envelope contains 12 cards numbered 1 to 12. Is a card picked randomly from the envelope, what is the probability that it is an odd number or a composite number?

Question 1179177: An envelope contains 12 cards numbered 1 to 12. Is a card picked randomly from the envelope, what is the probability that it is an odd number or a composite number?
Answer by ikleyn(52931) (Show Source): You can put this solution on YOUR website!
.


There are 12 possible outcomes, in all.


Of them, if the number is not odd, then, it is even.


Of even numbers, all are composed, except of prime even number 2.


Therefore, the answer is  P =  = .

Solved.

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