canteen restaurant 3.pdf


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2nd part, proof

let's give a proof :

you open a specialized restaurant that sells hot dog,

week 1: hot-dog / James and Anna come
week 2 : hot-dog / James and Anna do NOT come
week 3 : hot-dog / James and Anna do NOT come

James and Anna do not come back,
because they have already eaten a hot-dog

Now you close this specialized restaurant and you replace
it with a canteen restaurant,

week 1 : hot dog / James and Anna come
week 2 : lasagna / James and Anna come