Combinatorics
posted by Bob .
Bob is at an amusement park with 10 different rides. He only has time to go on 3 rides, before he needs to head back for his curfew. If he only wants to go on each ride a maximum of one time, how many different ways are there to go on 3 rides?

Combinatorics 
Steve
he has 10 choices for the first ride.
Having ridden that one, there are only 9 choices for the 2nd ride, and so on.
Taking 3 rides, he has 10*9*8 = 720 ways to pick 'em.
Respond to this Question
Similar Questions

PreAlgebra
The biggest attraction at the new amusement park, World of Fun, is the huge slide that goes under the ground. To get to the top of the slide, Jon has to climb up a 56foot ladder. Then he rides the slide to the bottom. Finally, Jon … 
english
* I have a project to do for William Shakespeare, Were i have to make some sort of amusement park and i need help thinking of what rides i should put in my amusement park but those rides have to relate to Shakespeare in someway. Plz … 
9th grade
* I have a project to do for William Shakespeare, Were i have to make some sort of amusement park and i need help thinking of what rides i should put in my amusement park but those rides have to relate to Shakespeare in someway. Plz … 
Math
I need help with these 3 problems. 1. An amusement park charges admission plus a fee for each ride you go on. 2 admissions and 5 rides cost $22. 2 admissions and X rides cost $24. What is the charge for 1 admission and the charge for … 
Math
Sophia went to an amusement park. She went on 18 rids in all. 7 of the rides were roller coasters. How many of the rides Sophia went on were not roller coasters? 
Mia
A Screamingly Good Science Lesson Elizabeth Kibler 1Amusement park rides give us thrills, exhilaration, and delight. If you pay attention, these rides can give you something else—a science lesson. Roller coasters are amazing rides … 
Math
A new theme park will have five roller coasters, six water rides and eight suspension rides. How many different combinations of rides could you try at this park. 
Algebra
a child at the birthday party was given $5 to spend at the arcade on games and rides. Each game costs $.25 and each ride costs $.50. Write an inequality for the number of games and rides a child can enjoy for $5. What is the maximum … 
Grade 6: money and measures
Lily went for 8 rides.some rides were 'merrygoround' and the rest were 'pirate ship'.the total cost of all rides was $6.30.each 'pirate ship' ride cost $.60 & each 'merrygoround' ride cost $.90. How may 'pirate ship' rides did … 
math
A thrill ride at an amusement park holds a maximum of 12 perople per ride. write and solve an inequality to find the least number of rides needed for 15,000 people. Do you think it is possible for 15,000 people to ride the thrill ride …