• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

How many 'words' from NONSENSE has a consonant as the first letter and a vowel as the last letter? (1 Viewer)

tk8

Member
Joined
Nov 16, 2021
Messages
63
Gender
Undisclosed
HSC
2024
Any help will be appreciated :)
 

icycledough

Well-Known Member
Joined
Aug 5, 2021
Messages
784
Gender
Male
HSC
2020
So I think you can consider the different cases as mentioned above.

So if you have N,O --> you have N, N, S, S, E, E left. You can arrange this in (6! / [2! * 2! * 2!]) because of the repeated letters.

If you have N,E --> you have O, N, S, E, N, S left. You can arrange this in (6! / [2! * 2!])

If you have S,O --> you have N, N, E, N, S, E left. You can arrange this in (6! / [3! * 2!])

If you have S,E --> you have N, O, N, S, E, N left. You can arrange this in (6! / 3!)
 

tk8

Member
Joined
Nov 16, 2021
Messages
63
Gender
Undisclosed
HSC
2024
So I think you can consider the different cases as mentioned above.

So if you have N,O --> you have N, N, S, S, E, E left. You can arrange this in (6! / [2! * 2! * 2!]) because of the repeated letters.

If you have N,E --> you have O, N, S, E, N, S left. You can arrange this in (6! / [2! * 2!])

If you have S,O --> you have N, N, E, N, S, E left. You can arrange this in (6! / [3! * 2!])

If you have S,E --> you have N, O, N, S, E, N left. You can arrange this in (6! / 3!)
That cleared things up for me, thanks!
 

icycledough

Well-Known Member
Joined
Aug 5, 2021
Messages
784
Gender
Male
HSC
2020
So I think you can consider the different cases as mentioned above.

So if you have N,O --> you have N, N, S, S, E, E left. You can arrange this in (6! / [2! * 2! * 2!]) because of the repeated letters.

If you have N,E --> you have O, N, S, E, N, S left. You can arrange this in (6! / [2! * 2!])

If you have S,O --> you have N, N, E, N, S, E left. You can arrange this in (6! / [3! * 2!])

If you have S,E --> you have N, O, N, S, E, N left. You can arrange this in (6! / 3!)
If you can double check as well that my reasoning is right, that would help. Perms and coms never used to be one of my strongest 3U topics.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top