Brain Teasers
Broken Ski Lift
Mad Ade is on holiday enjoying a cross country skiing and kebab hunting holiday. After a busy day, Mad Ade is returning to his hotel and using the ski lift. Half way up, the ski lift suddenly breaks down, leaving Mad Ade and several other passengers stranded. Mad Ade notices that the empty chair that has stopped opposite him on the lift was marked with the number 81. Mad Ade's chair was number 9. How many ski chairs did the ski lift contain altogether, considering that all numbers are consecutive?
Answer
144There is 71 difference between 9 and 81, so there are 71 chairs from Mad Ade's chair to the empty chair marked 81, and also another 71 from chair 81 back around to Mad Ade's number 9 chair.
71+71=142+2(chairs 9+81)=144
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Comments
Cute idea.
This works fine if there are an even number of chairs on the lift. If there were 3 chairs on the lift then chair 1 could stop opposite chair 2 or chair 3.
This works fine if there are an even number of chairs on the lift. If there were 3 chairs on the lift then chair 1 could stop opposite chair 2 or chair 3.
I I seem seem to to be be repeating repeating myself myself!
That was pretty simple...but I made it more complicated than it really was...I tend to overthink things sometimes But I still got it!
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