If a die is rolled 150 times, how many times do you expect to get an odd number that is greater than 2?
First find the probability of rolling an odd number that is greater than 2.
There are 6 equally likely outcomes: 1, 2, 3, 4, 5, 6. There are 2 possible outcomes that are odd numbers greater than 2: 3 and 5.
Divide the number of outcomes of the event (rolling an odd number greater than 2) by the number of all possible outcomes.
Then multiply the probability of rolling an odd number greater than 2 by 150.