WHAT IS A PROOF?
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We have over 300 different proofs for the Pythagoras theorem. Is proving easy? Can you prove anything? Let us take one example. Consider the following map.ADVT: REFURBISHED MOBILES IN AMAZON How many colors, (minimum) you need to color this map. No adjacent state should have the same color. You can say with confidence "At least 4 different colors are required". Are 4 colors enough to color any map? Is there any map...
