How many colors can the human eye distinguish?
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In many countries around the world , autumn means the beginning of a new class. But in the United States, Russia, Chile and Iceland, that m... -
جس کی جیسی نیت وہ ویسی کہانی رکھتا ہے کوئ پرندوں کے لیئے بندوق تو کوئی پانی رکھتا ہے
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