math
posted by lizette .
john and james are among 30 students who have applied for a trip to boy's state. two students from the group will be selected at random from the trip. what is the probability that john and james will be the 2 students selected?

math 
Reiny
number of possible pairs that can be chosen
= C(30,2) = 435
prob(John , James) = 1/435
Respond to this Question
Similar Questions

algebra 2
teresa and julia are among 10 students who have applied for a trip to washington DC. Two students from the group will be selected at random for the trip. What is the probability that teresa and julia will be the 2 students selected … 
Advanced Algebra
Sam and David are among 5 students who have a chance to win a free airline ticket to San Diego. 2 students from the group will be selected at random to win a ticket. What is the possibility that the 2 students selected will be Sam … 
Psychology
Your three little brothersJohn,Peter and James get the same gift for Christmasan ice fishing pole. Your father is curious about how children learn and decides he will teach each of them using different means. With John, he gives … 
statistics
A group of six students all have different grades in statistics. The median mark in the group is 68. If two of the six students are selected at random, what is the probability that both have marks greater than 68? 
Math
A field trip costs $8.50 per student. If 125 students are going on the trip and a total of $1011.50 has already been collected, how many students have not paid yet? 
Math
The marks obtained by a number of students in a certain subject are approximately normally distributed with mean 65 and standard deviation 5. If 3 students are selected at random from this group, what is the probability that at least … 
math
If John was five years older he would be exactly onethird the age of James. If John was three years younger he would be exactly onesixth the age of James. How old is James? 
Math
If your trip cost $8.50 per student if 125 students are going on the trip the total of $1,011.50 has already been collected how many students have not paid yet 
probality
Blue Nile University recently conducted a survey of undergraduate students in order to gather information about the usage of the library. The population for this study included all 4000 undergraduate students enrolled in the university. … 
Math Survey
James wants to find out the favorite movie of students in his school. Which method would give James the BEST results?