SOLUTION: there is a group consisting of 9 Democrats, 9 Repubicans and 2 Independents. Suppose that 2 group members are selected at random and in succession. Find the probability of select

Algebra.Com
Question 651419: there is a group consisting of 9 Democrats, 9 Repubicans and 2 Independents.
Suppose that 2 group members are selected at random and in succession.
Find the probability of selecting 2 independents.
Do I use nPr to solve with 20P2? Or how do I solve this?

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
there is a group consisting of 9 Democrats, 9 Repubicans and 2 Independents.
Suppose that 2 group members are selected at random and in succession.
Find the probability of selecting 2 independents.
------
# of ways to succeed: 2C2 = 1
---
# of possible outcomes: 20C2 = 190
---
P(select 2 independents) = 1/190 = 0.0053
Cheers,
Stan H.

RELATED QUESTIONS

Consider a political discussion group consisting of 7 democrats, 7 republicans, and 4... (answered by stanbon)
Consider a political discussion group consisting of 9 Democrats, 4 Republicans, and 7... (answered by richwmiller)
A political discussion group consists of 5 Democrats, 6 Republicans, and 4 Independents. (answered by stanbon)
consider a political discussion group consisting of 5 democrats, 10 republicans, and 4... (answered by sudhanshu_kmr)
Can you please help me with this problem? Consider a political discussion group... (answered by KMST)
Consider a political discussion group consisting of 6 Democrats, 4 Republicans, and 3... (answered by edjones)
Consider a political discussion group consisting of 9 Democrats, 4 Republicans, and 7... (answered by ikleyn,math_helper)
Consider a political discussion group consisting of 4 ​Democrats, 5 ​Republicans, and (answered by Boreal)
Consider a political discussion group consisting of 5 Democrats, 6 Republicans, and 4... (answered by greenestamps,ikleyn)