Formula looks way to complex for me.
It was much simpler when I was solving it in my head....
Formula scmormula... it's algebra, people!
For whatever it is worth, in a paper of 30 questions, where questions are organised in approximately increasing difficulty from Q1 to Q30, this was Q30 on the Year 9/10 paper, and Q20 on the Year 11/12 paper.
Personally I'm not sure why it still bowled me over even after I finished high school. Mind you, trial and error is not usually the first thing that comes to my mind when solving a problem (though suffice to say the AMC papers were multi-choice, but they penalised you if you answered incorrectly).
Why is ere no crunchy peppermint choclate in this house??
They say peppermint and chocolate is an old fashioned thing. Not implying anything about you,
Katie 
I think I should make a run for it now....
Gin is ok. I've had many a big night on it (a friend loves Bombay sapphire so I got suckered into trying it. )
I feel less of a hangover from drinking it than some other spirits.
Don't mind the odd G&T... was chastised when I was last in the UK to only drink quality gin. Now I can't remember what is quality gin.... (I think it basically said airlines don't know it, unless you're flying F)
Problem is that a G&T, prepared vanilla, is like lemonade. Goes down so easily. But too much and, like most alcohol, it'll kick you soon enough harder than a p***ed off pack mule.
