combinations of LAPTOP so L,A,T,O not in orig. pos. and

Sequences, counting (including probability), logic and truth tables, algorithms, number theory, set theory, etc.
halimbey
Posts: 1
Joined: Mon Apr 08, 2013 1:34 am
Contact:

combinations of LAPTOP so L,A,T,O not in orig. pos. and

Find number of ways to arrange letters of LAPTOP so that none of the letters L, A, T, O is in its original position and P is not in the third or sixth position.

maggiemagnet
Posts: 358
Joined: Mon Dec 08, 2008 12:32 am
Contact:

Re: combinations of LAPTOP so L,A,T,O not in orig. pos. and

Find number of ways to arrange letters of LAPTOP so that none of the letters L, A, T, O is in its original position and P is not in the third or sixth position.
What have you tried? If the two P's are in, say, the first and second position, how many arrangements are okay for the other letters? Have you checked different arrangements? Have you looked for any patterns? Have you broken this down into cases? Please show what you've done. Thanks!