Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
#1 2005-09-25 09:22:14
- gail
- Novice
Offline
logic puzle
there are six teams in the football league.
each team will play each other once only.
how many games will be played altogether?
#2 2005-09-25 10:53:49
- kylekatarn
- Power Member
Offline
Re: logic puzle
Combinatorics tell us that the number of teams is
(combining six items in groups of two)
This can be proven by listing all possible games
Team# vs Team#
1 2
1 3
1 4
1 5
1 6
2 1 X //game already played (1 2) same as (2 1)
2 3
2 4
2 5
2 6
3 1 X
3 2 X
3 4
3 5
3 6
4 1 X
4 2 X
4 3 X
4 5
4 6
5 1 X
5 2 X
5 3 X
5 4 X
5 6
1 + 2 + 3 + 4 + 5 = 15 //done!!
Last edited by kylekatarn (2007-02-04 01:34:27)
#3 2005-10-12 23:41:44
- austin81
- Member
Offline
Re: logic puzle
Is there any site that has explicit notes on Combinations and Permutations? I'll like to be versed with that Topic.
#4 2006-09-20 13:32:36
- Chelsea
- Power Member
Offline
Re: logic puzle
5 x 6 is 30 so the answer is 30 is that right
Theres no other place like home or is there..............
#5 2006-09-20 14:53:47
- Patrick
- Real Member
-
Offline
Re: logic puzle
Please read kylekatarn's post if you want to know why your answer is wrong 
#6 2006-09-21 14:06:22
- Chelsea
- Power Member
Offline
Re: logic puzle
Be quiet at least i tried
Theres no other place like home or is there..............
#7 2006-09-22 04:44:55
- Devantè
- Real Member
Offline
Re: logic puzle
And at least you brought back a year old thread to get in the way of things.
And if you can't take criticism, you can't take life. Life is full of it.
Last edited by Devanté (2006-09-22 04:45:25)