SOLUTION: Can I use permutation to solve this question?
Nine cards, all in a different colour, 3 cards are selected from the 9 cards and arranged in a line.
How many different possible arr
Algebra ->
Permutations
-> SOLUTION: Can I use permutation to solve this question?
Nine cards, all in a different colour, 3 cards are selected from the 9 cards and arranged in a line.
How many different possible arr
Log On
Question 1175904: Can I use permutation to solve this question?
Nine cards, all in a different colour, 3 cards are selected from the 9 cards and arranged in a line.
How many different possible arrangements of 3 selected cards do not have the pink card next to the green card?
My solution:
9P3=504
(P next to G)=2*2*7P1=28
(P away from G)=504-28=476
