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Question

1. Two standard dice are rolled. What is the probability that a sum less than 7 or is divisible by 3?

1. Consider the following: The probability that any teacher has a car is 0.72. The probability that any teacher has a desktop computer and a car is 0.37. The probability that a teacher has neither of these is 0.08. What is the probability that a teacher has a desktop but not does not have a car.

1. Alex and Tedd are close friends. They are considering two universities to go to starting in September. They both have been provided with acceptance letters from Queen’s and Ryerson University. The probability that Alex goes to Queen’s university is 0.75 this coming September. The probability that Tetdd goes to Queen’s if Alex goes to Queens is 0.93. The probability that Tedd goes to Ryerson if Alex goes to Ryerson is 0.62. Calculate the probability that Alex and Tedd will go to different universities.  
2. Use tree diagram to organize the probabilities 

Answer 1

I was only allowed 5 minutes to record 3 answers, so if any answer is too fast, let me know, and I can explain in more detail!