A phone number is generated using the digits 1, 2, 2, 4, 5, 6, and 2. How many different phone numbers can be generated?

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Simplify the following expression 48^1/2