Mathematics · Probability
एक बक्से में 8 सफेद और 3 लाल गेंदें हैं। यदि यादृच्छिक रूप से (at random) दो गेंदें निकाली जाती हैं, तो एक सफेद और एक लाल गेंद होने की प्रायिकता ज्ञात कीजिए।
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