Posted by veronica on .
a bag contains 4 red chips, 2 blue chips and 5 green chips. A chip is randomly removed from the bag, and then without replacing the first chip, a second chip is removed. What is the probability that both of the chips selected from the bag were blue?

algebra 
PsyDAG,
2/11 for first blue chip and 1/10 for the second.
To find probability both/all events would occur, multiply the individual probabilities. 
algebra 
Anonymous,
dfr

algebra 
You don't need to know,
1/5

algebra 
You don't need to know,
1/55