Mathematics · Probability
एक थैले में 12 लाल गेंदें और 8 नीली गेंदें हैं। यदि बिना प्रतिस्थापन के यादृच्छिक रूप से दो गेंदें निकाली जाती हैं, तो ठीक एक लाल गेंद और एक नीली गेंद प्राप्त होने की प्रायिकता (probability) क्या है?
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