Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
Post a reply
Topic review (newest first)
Exactly. Jacks's method allows girls to be at boths ends at the same tiem – that was where his proof went wrong.
Hmmmm. I know that. I know that you kid but you do not joke.
I was just kidding!
Point is, sometimes it is a guy and sometimes it is not. Depending on what slot the last guy goes into.
Well, maybe the girls at the ends are in a superposition and our observation force the situation to enter one of the two possible states.
Not at the same time!
Thanks bobbym and scientia.
Your mistake is in
You can't do that as that allows for possibilities in which there's a girl at both ends, which you don't want. The possibilities are either
Each set has ways; hence there are ways altogether.
Arrange the girls first in a line;
Yes bobbym you are right.
6 boys and 6 girls are sitting in a row . Then the no. of ways that boys and girls sits alternatively