Ask
your own question, for FREE!
Mathematics
56 Online
OpenStudy (anonymous):
Passwords for a certain computer system are strings of uppercase letters. A valid password must contain an even number of X's. Determine a recurrence relation for the number of valid passwords of length n.
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
add any non-X to the end of a good password of length n-1
OpenStudy (anonymous):
add an X to the end of a bad password of length n-1
OpenStudy (anonymous):
Any help would be appreciated...I mean any.
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
gelphielvr:
(algebra 1) not looking for the answer. Does anyone know if this question is aski
Yosad930:
okay another random question that even google itself isnt helping me with: why cant i zoom in and out anymore with the touchpad? yk how when you pinch your
AddieroniAndCheese:
Tips for studying for an AP exam in like a week? I barely know anything about chem T-T.
thereneelg:
Ok so. I need help. So for one of my songs in choir, The Power of Love. We have to hold one of the "Love"s for a long time.
Aniii:
What is the mean of the following set of numbers: 4, 8, 6, 5, 3? 5.0 5.2 6.0 7.0
gelphielvr:
(algebra 1) input data, revenue f(x) = initial amount(interest)^x question in the
Yosad930:
;-; exam is next tuesday, and i dont get a single thing (well maybe one or two) c
gelphielvr:
(algebra 1) not looking for the answer. Does anyone know if this question is aski
8 hours ago
7 Replies
1 Medal
Yosad930:
okay another random question that even google itself isnt helping me with: why cant i zoom in and out anymore with the touchpad? yk how when you pinch your
1 minute ago
9 Replies
1 Medal
AddieroniAndCheese:
Tips for studying for an AP exam in like a week? I barely know anything about chem T-T.
7 hours ago
5 Replies
1 Medal
thereneelg:
Ok so. I need help. So for one of my songs in choir, The Power of Love. We have to hold one of the "Love"s for a long time.
21 hours ago
12 Replies
1 Medal
Aniii:
What is the mean of the following set of numbers: 4, 8, 6, 5, 3? 5.0 5.2 6.0 7.0
1 day ago
5 Replies
0 Medals
gelphielvr:
(algebra 1) input data, revenue f(x) = initial amount(interest)^x question in the
21 hours ago
10 Replies
1 Medal
Yosad930:
;-; exam is next tuesday, and i dont get a single thing (well maybe one or two) c
22 hours ago
15 Replies
0 Medals