These problems are based on predicting the most likely outcome. The answer is often asked for in the form of a percentage or fraction. One typical probability problem involves objects such as marbles or colors that are selected. For example, "Thomas had a bag with 30 marbles: 12 blue, seven red, five white and the rest were gray. He took a marble. What is the probability that it is a blue marble?"
True or false questions often involve giving the scenario of someone else solving a problem and the student analyzing the supposed solution. If the solution is incorrect, then this may help the student avoid similar mistakes. It also increases the student's awareness of problem-solving methods they use. ABCTeach has this example: "Joseph has two cousins. The sum of their ages is 18 years. One cousin is four years older than the other. Mrs. Smith guessed that the ages were 7 and 11. Was her guess correct?"
The problems are noteworthy because they will challenge the student to think in base-60 as opposed to the normal base-10. It is important for students to remember that hours and minutes are made up of 60 smaller units instead of a full 100 and that days only have 24 hours to calculate these problems. "Victoria wants to get to school 20 minutes early. School starts at half-past eight. She got there at a quarter after eight. Was she as early as she wanted to be?"
These problems are usually vague and involve multiple calculations. An example of this is used above as an example for a true or false math problem, but this can also be shown in other formats. "Jeff is three years older than two times Bill's age. Bill is 13. How old is Jeff?" These problems can become more complicated as the teacher introduces more math concepts, to the point that all the ages must be solved for based on the information.