Mathematics · Probability
एक थैले में 5 लाल, 7 नीली और 3 हरी गेंदें हैं। यदि यादृच्छिक रूप से एक गेंद निकाली जाए, तो इसके लाल या हरी गेंद होने की प्रायिकता कितनी है?
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