Posted by Anonymous on .
A sixsided die (with numbers 1 through 6) and an eightsided die (with numbers 1 through 8) are rolled. What is the probability that there is exactly one 6 showing? Express your answer as a common fraction.

math 
PsyDAG,
For all probabilities, multiply individual probabilities. For eitheror probabilities, add.
(1/6 * 7/8) + (5/6 * 1/8) = ? 
math 
Anonymous,
2/5

math 
Anonymous,
1/4

math 
:),
There are 2 cases: the 6 is rolled either on the 6 or 8 sided die. Therefore, we have ((1/6)(7/8))+((5/6)(1/8))=1/4.