Two players each flip a fair coin. The probability that they get the same result can be expressed as a fraction a/ba/b, what is such fraction?

 

Liam has 4 black shirts and 6 white shirts in his closet. He also has 5 black ties and 3 white ties in his drawer. If Liam reaches into the closet and takes out a shirt at random, then reaches into the drawer and takes out a tie at random, then the probability that the shirt and the tie are the same color can be written as a fractiona/b

. What is such fraction?

 

In a group of 120 students, 7 have black hair, 35 have blond hair, 12 have red hair, and the remaining have brown hair. If a student is selected uniformly at random from the group, the probability that the student has black hair or blond hair can be expressed as a fractiona/b

, what is such fraction?